"Besides time trialing are these kind of rings good for other disciplines such as climbing or sprinting? "

Yes, great for climbing, I am still testing them for sprinting, and have not had a chance to ride the new models, which are not like Osymetric or Biopace, these chainrings have only a small ovalization as in the photo (they almost look round) and only increase the effective gearing by one or two teeth. They do not hurt riders knees.

Gary - RotorCranks.com