Replying to this old thread to explain what happened:
The lady who wanted a photo-book abandoned the idea, but I didn't. I had bought one roll for testing before the shooting, and got some more (expired) for more testing. Unfortunately, she rejected the idea.
All in all, you can see some results taken on a sunny day a couple of weeks ago and posted (the properly exposed) in the Weekend post (June 2nd-4th) and also below.
And d'you know what? I bought more rolls of this stuff
I do like the results for portraiture and also it is quite simple to scan, unlike Velvia
I could not do the comparison test (Portra 160 vs Provia 100F) because I did not have Portra, and at that time I only had just one medium format camera available. Now I have two MF cameras. All I need is a roll of Portra 160
If I ever do this test, I will post it here.
Portra 100F
And one bonus: Velvia 50 full power