I tried it, and dunno why would I use it.
It seems very feature incomplete (compared even to Unity, not to mention UE4).
Then I opened player script and tried to understrand it… but oh my, so much code, with so little meaning. I never liked Lua in first place (and could never understrand why people like it for scripting), so I might be biased, but holy hell, 500+ lines of code in lua just for player is not something I want to deal with.
tl;dr there is nothing in current release that it’s worth paying for. Especially without access to source code, or at least some plugin API…