Has anyone successfully converted and raced a TT frame in RRs and Crits?

I currently race a CADD7 and want an aero road bike frame (as other posts of mine will show).

Many of the geometry points are the same on the 2 bikes so I think I could make it work, any obvious reasons not to do this?

I ride a 60cm Cdale and am looking at the Large 2007 BMC TT02.

thanks,

-L