DDM 2.x switching inputs on multiple monitors

I have two dell monitors, one of which has a USB KVM (U3419W). Each monitor is connected to the same two computers. My goal is to use DDM and the USB KVM to switch BOTH monitors to the other computer when a certain hotkey combination is pressed.

I had this working beautifully with DDM 1.x with the help of EnTech support and their ddmhkm utility to execute a DDM command line at the press of a hotkey.

I have upgraded one of the computers and am now looking at upgrading to DDM 2.x (or DDPM 2.x) to stay current. First, it seems DDPM 2.x doesn't support a CLI? So that one is out. Plus it is huge (700+MB!!) and slow.

Back to DDM 2.x. It does appear to have a CLI, but I'm at a loss for how to automate switching two monitor inputs with the same hotkey. The ddmhkm utility from DDM 1.x doesn't seem to work, as it looks like DDM 2.x is built by a different vendor than 1.x. When executing commands to change inputs manually, I also find it is much slower than DDM 1.x in doing so. And I seems like I need to launch a CLI console first before the commands will do anything?

So, to my question: has anyone successfully automated a scenario like this with DDM 2.x (or DDPM) and if so, how? It would be great to have this natively supported in the software, but I'll take what I can get. Or I guess I'll revert back to DDM 1.x which I know I can make work the way I want.