I totally understand.
Although I usually don't do that and wait for the Linux version I bought it recently anyway. It was cheap and is said to work flawlessly in WINE. I tried it a bit over the holidays and haven't had any issues so far.
I mainly wonder what takes them so long as it doesn't seem to do anything that is uncommon or overly complex on the technical side.
Heck, if they'd put the source out there someone would probably port it for free.

Yay! The Linux version is there. I just saw the news on GamingOnLinux. Bought it quite some time ago looking forward to the long announced Linux version and had almost lost hope. Now I hope it soon arrives at GOG.

@Subset Games: Thank you very much and please count my buy as Linux buy.

For those who hear weird high pitch noise when the game runs: that's possibly goes from videocard, try enabling frame limit to stop it.