Of course this training pays off at my climbing grades in the climbing gym (and in the rock soon...) and fun !! of exploring the higher grade routes which are new to me. Not any more I warm up with loads of 5 and 6 grade routes. Mostly I warm up with something like 5b - 6a - 6b and then start projecting 6c and 7a routes. It works for me as long as I feel rested before the training and be able to focus on the route at hand.
Hmmm, can't wait to go to the rock soon. Maybe Fontainebleau on my way back from southern France in the summer. L8terz.