I recently had the chance to swap cameras for a day and got my hands on a Fuji GW690. This is a MF camera that I've been lusting for on and off for about a year. I'm really glad to have had a chance to shoot with it. I only had about 2 hours with the camera and crushed through a roll of Agfa Scala 200 that was souped afterward in Rodinal 1:50.
Initial impressions - Plastic. The camera feels very light and plasticy for its size. Lens focus is smooth and the grip is large and accessible. Shutter speed and aperture controls are located on the lens barrel also and are in a weird configuration that could be problematic for someone with fat fingers. Both shutter speed and aperture rings are side by side with tabs that seem just a little too narrow to manipulate just one parameter at a time. It also doesn't help that the tabs are somewhat recessed in a groove in the lens itself. The lens hood must be extended in order to access the controls. I found switching around controls to be awkward and not very quick or ergonomic. Rangefinder patch is bright enough. The edges aren't defined as a Leica M so it can be hard sometimes to find the patch in the viewfinder. On a bright day that I was shooting I didn't have any problems focussing, but in low light this could be another story. Granted, how low would the light get with an F3.5 lens. The camera is also meterless so I had to carry around a handheld meter.
Image Quality - Great sharpness and detail from this lens. This is where the Leica part of "Texas Leica" stands. The lens does exhibit 3D pop, even wide open. I'm not sure exactly how much of this is just because of the bigger neg size but for my needs the quality is more than enough for web, and surely leaves a lot of potential for cropping and enlargements. I did shoot the lens with a BW film so I can't comment personally on color of the lens but I've seen some wonderful results around from this camera with color film.
Ergonomics - The camera is light, and feels good in the hand with a small handgrip. Shooting with it is very similar to a leica except for shutter speed and aperture controls. There is a shutter release located on the front of the camera that includes a lock. I initially got tripped up with the lock because when disengaged there is a little red dot that goes with it. It kind of messes with your brain a little because it has the "red means go" type of thought process. Film advance lever is big and I couldn't help but think "canoe paddle" every time I advanced the film. It's a double stroke so you get to enjoy advancing this monstrosity not once, but twice. Focus is quick and once exposure is set the camera is a fast shooter. But setting exposure quickly without practice or tiny hands is this camera's downfall.
What do I like about this camera? I love the lens quality and familiarity to a real leica rangefinder. Since I shoot mostly RF I was quick to adapt to the camera as my normal street habits took over (sunny 16, shadow compensation, pre exposing). I like the weight as I felt no fatigue after shooting with it after the 2 hour period. The lightness also lets you throw it around much easier which again makes it a quick shooter.
What don't I like? The plasticy feel of everything. For those who know me, I HATE plastic. I like something that feels durable and I'm not sure that I get that feeling from the GW690, even though I've heard that they are built extremely well. I hate the shutter sound. This camera is not stealth. Even though you might say to me, "oh but it has a leaf shutter, they are so stealth!" I will say No. The GW690 has some weird spring mechanism inside the body that some say is attached to its shutter counter. It makes this huge "CLICK, SPROOOING" sound when the shutter is released. Just about every subject I shot that day looked up at me, even every single person on their phone in the first photo. Also the shutter and aperture controls are strange but I think with some practice, could be better. Lastly the F3.5 lens doesn't wow me. Bokeh and OOF areas are nice but I like the speed of my 105 2.4 or even my 80 2.8's
The GW690 is a great camera for someone looking for an affordable, every day carry 6x9 rangefinder. I would have no problem daily carrying this camera. It's light and maneuverable, and is capable of being a quick shooter with practice. You get a lot of looks with it since it's basically "clown camera" sized, but it's fairly unobtrusive and people aren't intimidated by it. If the plastic gets to you, there's also the older variants that are made of metal to give you the peace of mind you desire.