Depends on the floor tuner.
I have 2 iOS rigs now, 1 is a sonic port in my gig bag that goes everywhere with me and the other is a sonic port on a board with a Boss TU-3, Stageclix wireless and soon a Wireless IEM transmitter.
The only reason I have the tuner on the board is because I can, it sits off stage, means I can mute and allows me to run other feeds out etc.
But I'll happily gig using just the jamup tuner.