It has arrived.
Right out of the box, this band is clearly more of what I was looking for. It's not as thick (2.5mm according to Monowear) as the Clockwork Synergy band I tried, the buckle is hardly wider that the band itself, and the adapters fit much better in the case without wiggling. The adapters and the buckle are a flat black (charcoal, perhaps) which, while not a match for the space grey case, look much better to me than the glossy black buckle and glossy grey adapter that Clockwork Synergy used on their band I tried. The adapter and buckle color resembles the adapter color of the Apple black nylon band, if you've seen that one.
I am very pleased with the Monowear band. So pleased, in fact, that I'm headed to the site to buy a black one to supplement the brown one I have.