I used my 75 last night (along with my original 72 Telecaster) for an audition for a new area Beatles tribute band. They were not concerned with period-authenticity for amps and instruments, just sound and ability. I had set a User bank with 4 Vox amp-like presets I had come up with in manual mode, using the Class A Red setting as a starter.
Only concern was when another guitarist stepped on the CAT5 cable, might have yanked it out of the pedal a little, but I was not able to put the amp into tuner mode using the controller after that, will need to check it out at home tonight. The RJ45 connectors are definitely the weak link in this system.
Anyway, they invited me back - I'm now the 6th member of 'Instant Karma'!
Now I need to find the 'Sitar' preset in my amp, I know I found it before, but now I need it for Norwegian Wood!