Hi,
I used a MBP with a Razer Core X and RTX2080ti to do onsite work for a production about a year ago.
Once it was finally up an running, it worked pretty well, but I had to do a bunch of stuff on the bootcamp side to get it to work properly (most notably, uninstalling the AMD card drivers using creepy third party tools). It might be more straightforward now.
On the balance, once you’ve priced out the eGPU, the card, and the costs and hassles of transporting it, the benefits are marginal. I wound up traveling the eGPU in a 1510, and if I’ve got another case that size, it might as well have a laptop in it instead of a box I connect to another laptop I have to carry anyway. I wound up buying a Razer RTX 15, and mostly use that as my mobile workstation instead now.