>>/53599/
Yeah I am pretty comfortable doing those seated high cadence efforts. I guess I am more afraid of doing actual standing sprints with really aggressive power production. 
Speaking of sprinting, I think this winter I will stick mostly to practicing seated sprinting. I figure if my standing sprint just flat out sucks (1200-1300W peak) and I am not aero at all out of the saddle, then my comparatively okay seated sprint (1100-1200 max) would probably be faster in races. Let's see how it goes, I'm planning on doing some tomorrow.