I've installed a few of these and they really are cool. Easy to install. Cool sound. Tip: If you polish and buff the operating lever on these things they simply glisten and look amazing on your guitar.
Old video, but was thinking about getting one and was disappointed when you said it had to be back end fed strings, but I noticed that as long as you have roller saddle, it can be bottom fed too.. it makes no difference to the mechanics, at least from the looks of it. Just wanted to clarify for anyone out there… trust but verify of course.