I'll usually refer to my genderless Pokemon as "he" or "she" when I talk about them, so I guess I do see them as gendered. However, I can see most genderless Pokemon as being either male or female. The only real exceptions for me are Mewtwo, who is very masculine looking, and possibly Darkrai, who is very feminine looking (to me). Pretty much all other genderless Pokemon, though, look like they could be either. I really can't think of any exceptions except for the two that I've already mentioned.