That's a really cute picture but I'd be too scared to let a gecko anywhere near a cat! You must be far braver than I am!
I'm in negotiations with my 8yo at the moment because he'd really love a gecko but I have my doubts. The main reason is that his enthusiasm for our hamsters lasted all of a month and I'm not willing to do all the work myself. I think I'm going to wait until he's older and more able to look after it all by himself.