When I'm performing, my role is typically lead singer / front man / guitarist. Because of this, I don't have the luxury of turning my back to the crowd between songs to use the tuner on the Kemper. I'm sure this isn't uncommon.
The thought that comes to mind is running a cable from the alt out to the Boss TU-3 tuner at my feet, which I could just leave engaged in tuning mode. That normally mutes the guitar but since it's not in the input signal chain (I won't be using pedals) that wouldn't matter. I'd just need to select a muted profile when I need to tune. I have a very simple Tech 21 Mongoose MIDI pedal with five buttons, which match the five in a performance. Unless I really needed five distinct sounds in a song, I could make the fifth slot in each a muted profile for consistency - far right hand button is always "mute."
That's a workable approach, but I'm always interested in hearing other solutions. How do you guys configure your tuners for gigs? Especially if you're the guy up front who has to dodge the occasional tequila bottle.