While I can appreciate the quality of that format, I'd be afraid that all of my photos would end up in a closet somewhere with no one ever seeing them. I guess if I were shooting professionally and trying to sell them, I'd feel differently. As it is, the digital format just provides too many advantages in organizing, storage, use, and tweaking the output.
Interesting story on the lenses. I've never experienced that and not sure how I'd respond.
Anyway, you'll enjoy Prague. Here is a link to a Google Map I put together with some of my photos to show where they were taken:
http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=103349462466817013219.00043834f5c0d29376ad5&ll=50.092173,14.402475&spn=0.026321,0.079479&z=14