AFAIK he is still working on his boost drivers getting the software side of things to work properly.
Modding potential for the ODL20C is unknown. If it has the integrated side switch on the driver (like the ODF30), then you might be screwed. You’d need to design a driver from scratch or somehow rig up a side switch.
If it has a seperate switch, you are in a better position. Unfortunately, we are still waiting for boost drivers. MTN E has released his first boost driver, but it’s a small diameter and small powered. The ODL20C needs a bigger driver with more power. Richard also hasn’t got his e-switch firmware working on them.
It may be several more months before we see any proper e-switch boost drivers. Maybe 6 months, maybe more.
Ps, you’ll probably loose the built in charging.
Personally, I would not mod the ODL20C. I would start with a Utorch UT02 for about $25 because it’s cheap and I know it has a seperate switch. Then swap the driver once we have a good boost driver available.