I bought the omnibounce for my SB600, although it is not a perfect fit, it is good enough for me (no other alternative I suppose). When I first put it on, it was very tight, but after trying a few times the thing loosened enough for me to put it on.
I saw a 35ti at one of the Peninsula shops recently (maybe Alex photo?). Look around, there's usually one or two around. I own one myself, it's a jewel of a camera. Think I'll take it out to admire right now :)