Damn, you stole my idea (which I stole from them)..
I backed their kickstarter the first time round and have two of the belts. I’ve wondered if the plastic ratcheting strip could be miniaturised to that degree and still be solid enough to hold a watch in place. As well as micro-adjusting it would also then be possible to make it a bespoke length if you went with a similar system of cutting the end down to suit.