yeah, pretty much an innie. For the most part, nothing shows on the outside of the body.
As for elasticity, yes, the skin is still viable for surgery. I have a prep note for surgery center that recommends moisturizing and stretching massage to help it be retained. From personal experience, I can tell you that you can get stretch marks, with the accompanying sore and pain before. It's no fun, so, keep things fresh down there.