Deborah,
I had one for a while and they are superb. The "killer" for me was lack of a fast aperture. The other thing I didn't like was not having shutter speed shown in the viewfinder, so I was having to take my eye away to check the LCD screen on the back of the camera so that I wasn't going to get blur because the shutter was down at 1/15th, etc.
The lenses are stellar in terms of sharpness, contrast, etc - but they are slow. Some say that you don't need the centre spot filter on the 45mm lens but I definitely got some vignetting, so I tended to leave the filter attached - which robs you of a further stop of light.
All of that said, I'd definitely recommend owning one as they produce stunning negs. I had all 3 lenses with mine. I found the 90mm was used least. The 30mm was awesome - but you need a separate viewfinder because it is sooooo wide - and it's also the slowest at f5.6. However, it's also the one you'd most likely use with a tripod as it's not really a "street" lens - it's very much a landscaper's lens.
Paul Mitchell used to have one and he said he always regretted not keeping it. I miss mine from time to time but only for views. It just depends on whether your idea of a walkabout camera is one that offers a panoramic format. I suppose the good news is that you can switch to 36x24 if you want to use it as a traditional 35mm camera - but why would you?
