Cross levers will work as long as they are cable actuated. I have cross levers on all my drop bar bikes and love them. They aren't e-bikes though, so I don't know if they would get in the way of your electronic controls.
Unless there is some issue with short pull vs long pull I can't think of a reason that it wouldn't work but I just replaced cables/housings and don't want to mess them up. I'll try a web search to see if it has been done successfully by others.
No problems with the electronic controls. So you've used them on cable actuated disc brakes (I assume so from your answer but just want to be clear)?
I am pretty sure I had them on my Jamis, but I don't have the bike anymore and can't find any pictures of it. I hated the brakes on that bike. Every time I took a wheel off, I would have to recenter the brakes to get rid of the squeaking. This is the installation of cross levers on my Raleigh International. You can see that you cut the brake housing and insert them in line. If you want to undo it, you just need new brake housing. So it won't be expensive if you try it and it doesn't work out.
