1 - Yes, I Have ;-)
2 - As far as I understood, Chi-running (or the POSE method or others) insist on good running form. Running correctly makes it unnecessary - for most people - to have hi-tec shoecushioning or orthotics.
They don't insist on running barefoot, but the movement basics are the same.
If You want do run barefoot, I'd recommend to read a barefoot bible (f.i. The Complete Idiot's Guide to Barefoot Running). They give You lots of advice on preparing and caring for the soles of your feet.