Thanks for your comments everyone. So this isn't a Falcon built bike? Having ridden it now, I'd like it either way, but it's a bit more interesting if BE were independent when it was built.
I had it out for a first run on Thursday night, and really enjoyed it. It does feel heavy, but not in a draggy crap way as it rolls really well. The thumb shifters are satisfying and instinctive to use - easier for me than the SRAM twisty-grip thingies on my current hack bike. The indexing on the front is completely random, but the back works perfectly. I cleaned it down yesterday, and there's not a scratch on the thing - the paint was literally perfect under the muck.
All in all, I'm very pleased with it, and I've warmed to it in a way I've failed to do to my current hack in fours years of ownership. It's a keeper, for sure.