Just tried Norns + Skulpt, and the combo works great. Norns powers the Skulpt and the Skulpt works as a midi controller with a single USB cable. No external power needed.
So yes, I just discovered the Skulpt is a fantastic portable MIDI controller in addition to being an excellent synth in its own right. (Agreeing that at its price point of $300, it’s incredibly full featured, and sonically it blows Volcas and Refaces out of the water.)