Now that you ask this i'm not really sure.....
I drove LHD when i was in Canada but now i'm driving RHD in Japan, both manual transmission. (FTW =P)
What i THINK i did with LHD was drive with my Left hand when in town but once i started cruising on the highway or something i would switch to my right hand with my left elbow on the door rest. I think once i switched over to RHD i kinda started driving with both hands, between shifts of course, but sometimes just only using my right hand.
This was a lot longer than it needed to be, but you needed to know (⊙ᗜ⊙)