I use a small 4u setup with Queen of Pentacles and Chainsaw for drums and pads and Eloquencer sequencer and have good results. Here is my workflow when I want to jam out and capture happy accidents
I have OB-4 for tether free monitoring and record loops to turn the OB-4 into a modular radio. Now looking at battery pack to use for the 4u case to jam outdoors without need to connect to power.