Christophe flies mode two.

I don't think that it's necessarily a stick position issue as much as it is a practice issue. Fly what is most comfortable for you and what is the most natural. If you learned on a certain mode, then your brain will be programmed to respond to emergencies in the mode in which you learned.

As far as thumb and forefinger and thumb goes, I think i might be an oddball. I use my thumb and forefinger mostly, however I find myself using thumbs only occasionally, like switching during flights.