Concern is the access to tires though a slight raise in the BB height would be OK and something I could live with if it means I can get half a chance to catch up with buddies riding 29ers.
Paceman – as per the list referenced by jeffus
For those wondering why would I do this (extra rotating weight, lack of tire choice etc), I am more than happy with my bike but sometimes you just have to try and see what happens, as JFK may have said in this situation…We choose to go 650b in this decade and do the other things (like fat wheels or SS), not because they are easy, but because we have expendable income and too much time on our hands.