I was going to go that route for my 3D work, but at the time eGPU chassis and card was almost as much as an entire PC anyway. Decided to just go for the PC with the intention to hackintosh it but in the end Windows worked well enough for what I was planning to use it for, good thing I did too because now Nvidia doesn't work at all on modern MacOS so would have all been a waste of money if I'd gone the eGPU route.

I'm done investing workstation level costs into Apple platforms, I just can't risk them dropping support down the line anymore. Zero guarantee that another GPU will ever be released/supported for that Mac Pro.

Some might say "Surely they are not just going to develop that whole computer then discontinue it", why not? They did exactly that for the computer it was created to replace.