Campy RD with Shimano Cassette???

I am running a Shimano 11-36 10sp cassette. I have an opportunity to buy a Campy Chorus "11 speed" RD to finish my gravel bike project. Shifter is a 10sp bar end shifter, indexed, 105, I think but may be Ultegra, I don't know.

I know Campy is famously not compatible with Shimano stuff. That said, I know compatibility has more to do with matching shifters with cassettes - the RD is a brain-dead device which is governed by the shifter cable.

Thanks in advance!