I was hoping they were going to take my money (when I saw the "Join Beta"), unfortunately it is Windows only.
Personally I know only one person working in Go on Windows, I know 40+ either on Linux or MacOS.
I had my credit card out at "Vim Keybindings", only to be slightly disappointed by the Windows-only limitation (for now). Looking forward to try this out on Linux soon. Although I'm pretty happy with Vim, I'm curious to see if I'm missing out on a significantly better experience.
That being said, not a fan of a monthly subscription for a native desktop application.
For desktop applications I just translate the monthly subscriptions into yearly. Most software right now is sold as either yearly subscription or "year of upgrades" so it is one and the same.
If I can't use the software without an active subscription, it is definitely not one and the same. I like Sublime Text's license of 3 years of upgrade with a purchase, no limitation on usage of the software. Unclear (AFAICT from the FAQ) how it would work for CodePerfect 95.
I have some applications that are years old without upgrading to current version. Reason - the old version works fine and does everything I need. However if that's the case I sometimes decide to upgrade at some point to feed the developer.
I hope for Linux version soon.