Watch his wrists twist on impact. That alone drops my interest to zero. Try a Chopper 1. It cams the split open, doesn't twist in the hand. Home - Chopper Axe Only 90frns. They sell spare parts kits for Chopper 1, so it has the downside of moving parts. Disclaimer: I haven't used a Chopper 1 myself.
seen this axe before, prolly works great on nice straight grained, knot free wood. I think there was a forum that had one of these and was passing it around to members who signed up for a "trial". Consensus was, it was ok, not great, most would rather stick with a maul.