Mimi-

I'm a lefty, too. (and can't tell left from right, but that's another story.)
I'm left dominant in hand, foot, and eye. I find that I prefer to keep my left foot clipped in and just use my right to land. Which is kind of the opposite of what I "should" do, but my brain seems to reason that it's more important to control the bike with the dominant side!

I also reach for my water bottle with the right hand, probably for the same reason.

Dominant side controls the bike and stays with the bike in my little world.

Hey, I guess I have my priorities.....