Mark on SVWAG has said that it is so much like Sentinels, that he felt the Sadlers maybe should have acknowledged it.
It does streamline the system slightly,
by sharing the book keeping between all players; specifically how each player has enemies “attached” to them, that activate on their turn, as opposed to everuthing activating at the end of the round.
As far as play time, I’ve heard that 1-2 players is about 45-60 minutes or so, once you fully grok the system. The playtime and overall game play is why I went all-in as well for gameplay content. It’s something that can easily hit the table during the week, so my son and I can play after school. That’s rare for a coop in that genre. If you want a longer session, you always have the option of various story decks.
Eagerly awaiting delivery of this one!