Works pretty well for me on a 2012 Mac mini. It’s maxed out though with i7 and 16GB. I don’t feel performances are worst than with the latest official macOS version.
They have an iPad app now. Makes it easier to switch server but aside of that, no major advantage over WireGuard app. I use WireGuard app since it can auto connect on wifi or cellular.
https://medium.com/the-useful-tech/apples-new-accessibility-...