That is damn hilarious . And I love the look of them.
It's funny; I never thought about how gargoyles reproduced before. I guess I just assumed that other carved statues came to life too. But it also makes sense this way, since rock ifrits would turn people to stone (according to Disney's Aladdin) and they're similar to gargoyles. And since they're all stone--they then become gargoyles!
I think that Weregoyles are awesome! Though...they seem a little too zombie-esque for my taste. Hopefully they're more than just mindless, shambling monsters.
It's true. They were killed before "turning", and the ones who have recently turned are more zombie-like. You'll find the more mutated ones are a little more clever and skilled.