Cool. I was just curious if you were planning on using them for training. Looks like no. Not that you couldn't - I had a few guys in my tour groups on 303s or 404s that use them for everything with no problems. I've never tried the 303, but I have the Zipp CSC wheelset, which is not even in the same class, but I think they are phenomenal. Better than the Ksyiums and Campy wheels I've used. The 303s can only be even better.