thanks scotroutes – think I will go with the left under bar lever and if I find it a problem on the old thumb I can always change to a 2x. Easier that way, as going from a 2x on right to a 1x on left would mean a longer outer, which is a PITA as I think I’d need to remove BB (for which I don’t have right tool yet), whereas going from left to right will be a simple case of shortening the outer.
Will purchase from LBS anyway, not just so they can pop the BB out and thread the outer but mainly as warranty returns through the shop (which given my dropper seatpost experiences are likely) are so much easier than online purchases IMO.
Anyway, how do you rate it compared to others ?