Just set up evcc.io to try it out, and wanted to report back how well it integrates with the SMA gear. You can even add it as a load in Sunny Portal to allow for graphing or hand-off control to HM2.0.
I’m waiting for a better scheduling feature that’s being worked on so I can control the evening charge with more granularity. PV charging would still be handled by HM2.0 as it’s working well. Until then, evcc isn't as useful but the potential is there.
The downside, for me at least, is that there’s no integration with MG ZS EV so the SoC can’t be read to stop the charge at a set level. Also, having a SMA EV Charger require one to sponsor the project by paying a small fee.