Its funny how a visible field stop can be a marmite kind of thing. Some people love it and some people hate it. Some people like ourselves want that thing gone so we can feel like we are floating in space. Others feel lost without a visible fieldstop and need a border to frame their view.
Luckily Televue is reacting to that to keep everyone happy with the Delos. All the other benefits of the Ethos except with a 70º AFOV for those people who love everything about the Ethos except the eyestrain they got from their spinning eyeballs because they just couldn't stop themselves from always looking for the edge.