I am considering getting one installed because I have only two remaining complaints about the Hi Power - the lack of trigger reset, and the difficulty reloading under pressure(yes, I practice).  I don't have any trouble speed reloading my CZs, but I am constantly fumbling with my Hi Powers.  The smooth Mec Gar mags are better than the parkerized mousetraps, but I am looking for perfection.  No, I won't be installing it myself, I have 3 gunsmith friends that could/would do it.  If you have one, does it make reloading that much faster?  Thanks.

I have never touched a BHP wearing one. But I want one on my next high power.

Well, that makes two of us.  Hopefully we'll get some feedback.  My one gunsmith friend said "no problem".

Do it, post pics

At $57 + free labor, I think I am going to do it.  Couldn't make it any worse.

Update:  I have decided not to do it after much research.  People say it doesn't make that much difference, and in some cases, you have to take material off the bottom of the grip, shortening it.  My Mark 3 is too valuable to go chopping it up.

Before I sent mine to C&S for other work I beveled the magwell with a file knowing it would be re-blued while there.  Made a nice difference.