I wasn't around for this, but I have read about those bunny-girl outfits from the Gold Saucer initially being female-exclusive, and how there was such an unexpected outcry from the community over it that they soon decided to let males wear them, too.

Now that they're adding an actual bunny-girl race to the game, I don't think they'll go about it the same way. I think they learned from that experience, and will be making males an option right from the start.