Thanks mate, that does sound more rigorous.There is an additional plate through which the locks pass that firmly lock the device in place. Also there are two metal spring tabs added to the part that twists to lock the props. In order to release them, you must pinch the metal tabs inward then turn them. It is a more positive locking system.
I haven't heard (in my limited experience, granted) of anyone having trouble with the v2 locks. I know of the shortcomings of screw-ins, but have there been cases of v2 props coming off?