Have you contacted whoever sells/makes the Clipdraw?
Looking at the Hellcat lineup, I'm guessing the only thing they will ask is if the one you have is an OSP or iron sight version, and possibly if it has a safety, since the area of the slide where it would mount appears to be the same on all the different options except for the optic cut and safety.
Personally I would not use a Clipdraw without a manual safety. Among the trends that went along with striker fired pistols that lack a manual safety was the switch in holster design to having the trigger fully enclosed and protected from any possibility to being bumped.
I know there are those who are perfectly happy with just the trigger safety, so this is just my opinion on this
