Ordered some new tyres today. After much deliberation and mind changing I decided to play it conservative and just go for the stock Sport Demons. They'll get the job done. Just waiting for the bt45 rear to wear out. It seemed to flatten in the middle pretty quickly but now that it's down to a few mm of tread depth the bloody thing won't finish itself. The front's pretty bald on the sides but likewise, the middle won't go away. Been doing some long commutes lately so might as well use them up. While the rim is bare, I'll get a few broken spokes replaced.
FWIW the BT45 is fine but I just don't love how it looks, hence the change back to pirelli. Pretty shallow reason but they work well as well.