I have a few shots I've done at weddings, but I can't find them... Il have another look tomorrow!
They certainly take a little bit of patients to get used to! I keep meaning to get mine back out... I think I will soon...
Well, I guess it tilts, but I wouldn't describe it as a shift/tilt lens as such. It is a selective focus lens with a larger or smaller central zone of focus (depending on the chosen optic / aperture plate) which allows you to move that zone to a specific part of the image. You would struggle to get the compressed scale effects you are referring to though.
It's worth browsing their website though http://www.lensbaby.com I guess the Composer is the easiest to use.