Check out some of the big name holsters and look at the SKU numbers for 1911 and the BHP. Often they are the same. They are close but are far from interchangable.
I bought a $85 leather holster one time at a gun show. Top notch, name brand holster company. Great leather, awesome holster IF you had a 1911. The vendor assured me that it would fit the HiPower properly. In that companies catalog, it lists the same SKU number for HP and 1911. Well, the HP slopped all around in it and certainly didn't fit right. Sold it at a loss to a friend with a 1911. I don't like to name manufacturers but if you search around you'll see what I mean.
This is not meant to be a slam on the truly custom leather makers as I'm sure they make them fit right. Problem is, although very nice, these holsters will usually run you over $100 to start.
Here is the one from Sportsmens Guide. Marked "Classic Old West Styles" on the back. "HP" for size/type.