Just my hunch here.
@brooks emphasized this new Vapor boot is a "true hybrid". Notice in video, the injection molded sole plate has the standard 5 hole screw pattern for mounting the boot to Radar single or Sequence plates. And, as seen in this pic on their web site, the "true hybrid" boot appears to have the ledge on the heel to work with a Reflex release. And, the new toe design Brooks mentions appears to fit in the Reflex toe loop.
Also, notice how well Brooks hides the heel throughout the video with his hand. Hmmm. Happenstance? He does allow one quick glimpse, though.
So, the "trule hybrid" Vapor boot - use on a Radar plate, or use it with a Reflex release system?
Rely on the bungie to release your foot when mounted to a Radar plate. Or, crank the bungie and BOA down when using with Reflex release.
Or, it has nothing to do with working with Reflex. Instead, maybe Radar has their own 'Reflex-like' release system coming out?
"True hybrid".
Looks good.
We'll see.