I did the transition after reading the book a couple years ago...

I did the transition after reading the book a couple years ago too :) For me it was easy, but I think that was due to the fact that I used to spend a lot of time down barefoot as a youngster anyway with a fair bit of running on the beach (barefoot).
After spending years running 'shod' (due to falling for marketing hype about heavily padded shoes) and switching back, it was soooo liberating!