Cheers NFH. Looking at it now, there's no evidence of a krausen. Judging by the rate it chewed through the primary (1.056 to 0.999 in 3 days) 100 odd g wouldn't have touched the sides. Or shown on the refract.
Haven't taken a sample tonight, but I'm hoping it'll taste ready to crash by Sunday. The julliened root (heh... etc.) has a pretty large surface area and hopefully has had all the sugaz extracted by then. Once the yeast has dropped out it should be a less lurid shade too!