Thanks for offer. But no longer in london.
I'm building up new wheels soon, so will get some put on there to try. Need to do some good distance on them and see how they fair over time.
Do they feel nice to ride on?
Do they grip in the wet?
Do they leak much air over time?
I think i'll have to get some and test them out. See what I think and make judgement.
They one pro are meant to be a LOT better than one. Lighter, lower RR, more supple.