Hi @michaelhobo and welcome to the forum! Great to hear your Joulescope has been useful. As you noted, your Joulescope JS110 measures the current from IN+ to OUT+ and the voltage from IN+ to IN-. As of now, we do not have a multichannel version of Joulescope available or on the near-term roadmap.
The Joulescope UI only supports a single Joulescope at a time, but you can open two Joulescope UI instances at the same time. You can connect each instance to a different Joulescope. I know several customers that do this. We do not currently have software that overlays the signals from two different Joulescopes. Is this good enough for your application, at least to start? We do have several reasons for adding support to overlay waveforms from different sources, mostly to assist with comparison over time, but we have not yet scheduled this feature.