The excessive curvature of the passenger window was very difficult. I had to stop its travel short because it would collide with the lock mechanism:
another view:
The driver side isn't as bad but does have some limited travel. It won't go down all the way for the same reason. Here they are all the way down.
The good news is that the motors seem to be strong and go up and down nicely. Also, I was pleasantly surprised with the quality of the inner liner.
I did minimal modifications to the doors to try to make things fit a little better but I don't really enjoy working with fiberglass so I settled for "good enough"