I've been contemplating this for a little while. I'm thinking of buying a second wireless system to get my effects unwired from my amp. I'd have one wireless box on the board (which would actually give me more range out in front of the stage if I decide to run out there on smaller gigs). Granted, they would still need a power cord out to the board, but that could run from offstage so it didn't cross my "jumparound" area. That would mean no cables between my amp and the front of the stage. Has anybody tried this? And is it worth it? I'm thinking of getting one of those digital sennheisers that can be had for a couple hundred bucks (and are the closest things you can get to an Xwire nowadays).