Does anyone out there have one of these? I'm seriously considering buying one, but I'm worried about feedback (from the amp, I mean). Some years back, I got an unpotted pickup from another winder, and I couldn't gig with it because of the squealing feedback at any volume. In Don's demonstration video the click of the pickup selector is audible -- which I totally dig -- but I'd like some reassurance that the pickup won't feedback at normal stage volume (I don't play high-gain stuff). I emailed Don at his site last week but haven't gotten a reply, so I thought I check in here.