The last 2 rounds I was involved in moved the option pool into the post-money. In one case, the initial price was initally discussed and negotiated with the expectation of a post-money option pool. In the other, there was a term sheet with a post-money option pool so we asked the other term sheets to be rewritten using a post-money option pool (they changed their prices accordingly).

I'll note that in every case where someone has asked for X pre-money, they have asked for less than X in the post-money. That's why I consider that term to be dirty - it's purely a means of obscuring the real valuation, and has nothing to do with employee ownership.