I bought it and got it up and running on my Mac this afternoon. I had a few teething troubles trying to get it up and running but eventually ended up copying the binaries for Neko into the folder with the gmlive server tool to get it up and running. Still trying to get my head round how to get changes in rooms updating, so objects can be placed while running but, once the server was up and running in terminal, then I just used the
if (live_call()) return live_result;
line in both the step event and the draw event in my player object and I was able to adjust the player movement and draw info on the screen while the game was running.
TLDR: Yes, it worked.