Hi!
I can confirm that the switch works…and really well!
I have a few max4live devices using grid and arc.
On the norns i have an awake sketch running.
Pressing the usb switch to change the grid and arc to be used by the computer or the norns takes like a second, you get the led feedback on the arc / grid as you had just plugged it in, and in a second after it picks up where ever you left it before.
Yikes!

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