Band equipment tubes are usually selected to have low microphonics. If you go to a electric guitar website you will see them talking about the same tubes and manufacturers we consider for home audio
Also some (not all) guitar players want the tube in the amp to distort early or at lower volumes. I would not want that in my amp. That being said some guitar amp tubes I've seen state you can specify when they distort (may be referred to as soft [early distortion] or hard [late distortion] tubes). Those are the only differences I'm aware of.
Many musicians search for NOS tubes to either warm up or put an edge on their amps's sound(tone control-same as, "audiophiles") ie: (http://thetubestore.com/12ax7review.html) and (http://www.guitaramplifierblueprinting.com/Tubeprimerandselection330.pdf)
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