I believe I'd pay out of pocket at a reduced rate, but I'm not 100% sure.
True; also very standard is cashless exercise, where you "pay" for your options using some of the optioned stock itself (really, taking fewer shares in a type of margin purchase). [1]
[1] See, e.g., http://www.investopedia.com/terms/c/cashlessexercise.asp
Maybe you are thinking of a restricted stock grant?