I had an old Galco Gunsite belt holster that stated it could be used for both, and it worked fine with both, with a little adjustment between them.
Ive tried/used the High Power in a couple of of others, and it was hit or miss. I think a lot will depend on if the holster is "formed", like out of kydex, or just more of a pocket, like many leather holsters, even those that have been molded to one gun or the other.
Thinking back, the High Power usually fit the .45 holsters better than the other way around.