It looks good and if they've really managed to fix most of the issues with uturn mags then that's a huge bonus.
I'm just not about to buy a marker without eyes that isn't a pump. Also an electro wont fire without a ball in the chamber (and you don't need to recock it after) and allows 3shot burst etc. so it's much more "realistic" and reliable. The DAM is the closest thing but dmag style mags are a dealbreaker, and no stocktank or airthru option = yuk.
More power to scarab though, this looks like a well thought out design even if it is a blowback.