Although I have yet to see it, I ordered a 40 cm center to top of top tube (yes, forty cm) frameset. I have ridden as large as a 52 cm to get some semblance of length in my bikes (currently 53.5 seat tube @ 74 degrees), but my seat is low enough that I can't clamp the seatpost in a traditional, now old-fashioned Park stand.

My new bike will be a 40 cm ST x 56.5 cm @ 75.5 deg TT, and yes, it'll slope like mad.

pic in this post:
http://sprinterdellacasa.blogspot.co...ltrasound.html

On my "test" 40 cm bike, a size S Giant TCR (40 c-t of top tube, 44 c-t of seat tube), I've used two large bottles in two normal cages (Specialized) without problems. Only thing is when I put something under the top tube, like a pump.

On an XS Giant I could see the seat tube bottle cage as having limited room.

cdr