I haven't used posts, but I do bury my eyepins in a lot of the earrings I make, and that has worked just fine, so I can't imagine your idea wouldn't work! I agree with Rachael about using some Bake n Bond or TLS -- it is just one more measure of security that is nice to have.
~And yes, questions are allowed, and wonderful, here! Lately things have turned more into promo threads, but I like the questions better. ;)