That's the kind of thing I was guessing at. The o-rings are indeed tiny, much more like a poppet-style marker, and I figured the increased surface area of the spoolies was part of what made cold weather an issue, as well as first shot dropoff.
Part of me doesn't want to get too excited about this thing, as it's well outside my self-imposed price range. But it's so interesting and just ingenious that it's hard to keep away from it. Hence, the other part of me is thinking this might be an exceptional marker in more than one respect.