If it's OK to tell about how hitting thumbs with hammers is bad for solving, it's going to be OK to recount this mishap.
I've just got out of hospital after a car smashed into me while I was cycling. My multiple skull fractures have given me a sore head, vision problems, plus the general lack of any sleep while in hospital, combined with a beat-up body from head to azz have sure messed up my solves. At least the stopwatch might give a guide to my recovery process.
But prior to becoming a news article on the local paper's online edition (I'll spare the link) I had been enjoying my new mirrorblocks. Of interest to Mark Newt On Base, my best sighted solve has been 1m13s, and I've had two decent unsighted solves of 3m47 and 4m00 which I'm pleased with.
The down side of m-b occurs when you go back to a regular cube, and it looks loud, gaudy and confusing.