Yeah, Paw is a great piece of software, but the fact that it's macOS-only is a very severe failing IMO. I bought a license and ended up switching to Windows a few months later due to circumstances outside my control, and now I regret having paid for Paw.
It's cross platform like postman so I can use it on my linux box and recommend it to all of our team members and it's not a pain in the ass.
Surprisingly I thought I'd place a lot of value on the native mac look and feel for this app but it really doesn't make a large difference.