Just to wrap up here, My iRig Blueboard works well for me, allowing me to choose next/previous song, plus Restart and PageDown. Many other choices are possible but these suit me.
It works at the same time as 'following' the drummer's BH and also while sending Midi timing clock to my Line6 Helix guitar floor unit for delay (echo) timing.
All that's missing for me is the means to easily 'connect' the iRig Blueboard without backing out 4 pages, doing the deed and then going forward again to the setlist. It would be great to see that widget/button/option under one of the buttons on the screen, whether Midi, Pedal, Linking, wherever.
Good job Arlo
Jerry