Put clear coat over it after you get finished and it won't come off. But DO NOT spray the clear coat close to the Plastic Dip sprayed area because it will make it look white. Hold it about 3-4ft back and it will help the plastic dip not come off, otherwise it's going to come off sometimes fast, sometimes slow, and I have seen some come off all at once.
Clearcoat isn't going to keep any base from coming off if the base isn't laid down correctly and adhered properly, especially something that is designed to be removed if wanted. The clearcoat will add a layer of protection against chips and scrapes but it isn't going to affect the adhesion of the base. The clearcoat adds an extra layer and may give the impression that the finish is "tougher" but if the part isn't prepped and sprayed correctly the base will come off and the clear is coming with it. It may take a little longer but the clear won't "hold" it on.