That forward cocking action is just weird, and breech/barrel assembly adds a lot of mass to the action. I'll stick with my tried & tested regular pump set-up. It looks overcomplicated and won't offer anything that current pumps don't already have - including pressure regulation. I slapped a CP inline on one of my cocker pumps, and got a good 37 shots out of a 12 gram dump changer.
It doesn't appear to have a slam fire option - at least it wasn't mentioned. Which kind of limit's it's options for open class events. A chopped ball in that breech might also be a PITA to clean. Not sure if it's field strippable for cleaning/pull through access, but it could leave you stuffed mid game.
2/10... oh and it's fugly too