Yeah, it's all for freedom of movement at shows. Even though wireless transmitters have gotten a lot better than previous times (in the 1980s one of the Spinal

Yeah, it's all for freedom of movement at shows. Even though wireless transmitters have gotten a lot better than previous times (in the 1980s one of the Spinal Tap spoofs was getting radio interference in their wireless guitar system if I recall correctly), now using similar frequency bands wi-fi does with proprietary protocols from what I see (definitely not Bluetooth!)... you still see reviews of reliability problems in some circumstances. You'd definitely want to carry around a standard guitar cable as a backup if you have one.