Adam,
That is most unusual to pick things up with your "weaker" hand quicker than your dominant. I am a rightie and so was able to go pretty smoothely with my right with a minimal practice. As with most things, my left is taking some training.
When I first began on staff, I *only* did staff for a few weeks. The moves were automatic and flowed pretty nicely, but I when I picked up my poi again, I tried to move my wrists as I do with staff subconciously, and it was rather humorous. I have learned I have to balance between the two to keep from my body memory setting tightly to one or the other.
The other thing I have noticed, for me personally, is that if I walk away from poi for a week or two, when I come back I have new moves that appear and things seem to resume where I left off, or be better. Not so with staff. It takes a more concentrated effort on my part and therefore, I "lose" the movements faster than with poi. When I pick up the staff after putting it down for a couple weeks, I have to go over the basics again for a short bit to get the flow back before I can move on to something new.
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Pele
Higher, higher burning fire...making music like a choir...
http://www.pyromorph.com