Update: bought it.
In the process of getting it onto my 3DS and Wii U right now.
EDIT: Couldn't get the regular version running at an acceptable speed on the 3DS, but the Everdrive version runs perfectly in the default Virtual Console emulator. I'm fine with just using the restore point system instead of normal saves.
Had fun with the demo, which I remembered that I'd downloaded as I was transferring rom files to my recently softmodded Wii U. Playing it on a TV with a Nintendo controller felt right.
Will definitely buy the full game as soon as I know my finances are secure for the rest of the year (and I've knocked another couple of games off the ol' backlog).
