Yes, I have 2 sets. They work well for the most part. Sometimes one of them refuses to cut a string,not sure how to fix it. But I have not contacted them about it. I heard they were designed by Ned steinberger, not sure though. Nice option to other locking tuners. Hope this helps!
I put them on all my guitars, if at all possible. Never had a problem with them. Nice turning ratio, easy to use, nice knurl grip - easier on the fingers than the narrower sperzels. When I ordered my strat neck from usacg, I talked necks and tuners with the guy for awhile and the PWaves were also a favorite of his (=lots of experience).