My dealer disconnected the switch at my request, but left it mounted. Inspection of the switch today was interesting.
The first thing I noted was the correct mounting position of it requires the pigtail enter the unit in the front of the switch, and the leads entry point in the switch is not sealed in any manner (just the sleazy black tubing on the wires ending just short of the entry point.), leaving it open to all sorts of crap thrown back by the front tire or moisture etc. simply floating in the air. Combined with the very sharp bend of the pigtail at the entry point I imagine the crap getting into the switch when riding is a major cause of the "problematic" description often given the switch.
Rather than take the chance with the questionable quality of the switch, I removed it and sealed the frame connector.