I've never even heard of a chameleon until now... I know there are other purse organizers out there, but never seen this one.
I actually use two black LeSportsac make-up cases, a three zip (to carry my essentials) and two zip one (to carry my "just in case" stuff), to organize and store my stuff. Then when I wanna switch out bags, I just take out those make-up cases and don't have to worry about grabbing everything seperately at the bottom of my bag... Then if I'm carrying a big bag I'll take both of the cases, but if I'm carrying a smaller bag I'll just take my 3 zip case and leave the 2 zip at home.