Ok, I don't like the idea of the pole sticking out of the ceiling, so that's no good. It's only a slightly curved wall and I just wanted to be sure the TV could slide down the stuff you attach to the wall.
I posted this problem on another site as well and there seems to be a consensus: stop worrying, all is well.
Thanks for the feedback, I'll let you know if I experienced any problems (it won't be until a few months, but I'll keep my word)
Thanks,
HD