Cyclocross Bikes - SS / Fixed

I've got a cross check and it's a great all round bike. Biggest tyres I've fitted were Bontrager Jones AC-X 29 x 1.9, but there's only a few mm clearance so not great in the mud. Makes it into a fun monster truck cyclo cross bike.

I really think the best frame in this genre is the Singular Peregrine. Disc only with an EBB (which is much better than cantis), takes 29 x 2.1 tyres with a bit more clearance than the cross check, looks amazing. I'd have bought one if they did one big enough for my lanky frame. Would do all the things you want plus touring.

With you on the Peregrine.
Just thought a lower TT might be a better idea for a shorter person riding off-road. I could'nt stand over the small :(

I make the standover on the 54 ETT cross check to be around 2" less. Plus, doesnt the geometry, of the cross check, become more compact as you go down in size?
http://www.surlybikes.com/frames/cross_check_frame/