As you already understand, the transmit and receive capabilities of the professional music industry systems are really just not strong enough to cause an issue. I feel the issue would be more for you than "them". And if it's frequencies are stepped on, you figure something else out for the gig as you would for any situation. Or heaven forbid our 700 Mhz gear is slowing any Verizon customer's smart phone down from 4G to barely 3G...bite me! You'll get it back when you leave the club or until I get finished playing.
Why they chose to not let us use them is beyond me. Stop making them...sure. Make us stop using them? NOT ON MY 4th OF JULY!! Kidding...kind of. I had some 700 Mhz gear before the ban that was top shelf. And it still performs fine. It's on for a max of 3 hours about 6 times a month in 6 different cities.
I'm in your camp. When they outlaw the 700 Mhz band for rock and rollers....then only the rock and rollers will be outlaws. (Squint...remove the cigar....spit on a mangy dog...ride into sunset leaving the hot chick behind....and fade).