Looks great and works. My only complaint/suggestion would be that it should be held together with 4 screws instead of only the 2 at the bottom end. With no screws (just snap tabs) at the top, it easily opens up causing the follower to tilt sideways and jam. I wouldn't have minded paying another buck or 2 for it not to do that.
As stated it's not compatible with the nexus pro...but with alittle trimming and filing of the feed lips, it's working great with mine (running both worker internal kits) with the added benefit I accidentally just discovered of being able to be inserted/removed without priming.