On a side note, the problem with RF congestion is getting worse. Where users are standing next to their receiver and not requiring a greater amount of transmission power, I'd like to see more manufactures add a 1mW switch to reduce the impact the system has on surrounding wifi devices.
I've just read that Line6 has an option on their transmitter that reduces the power down to 3.3mW. The added bonus is that with less power, you can get more devices in the same RF spectrum without running inter modulation issues and of course, much longer battery life. If you aren't running about all over the place, I would highly recommend that you take the power down to avoid such problems in future.
10mW and even some devices which are transmitting at 30mW is just ludicrous to provision a couple of metres (if that) worth of wireless transmission.