Jazzyo is working on something very similar.
despite their ruined reputation (from the "shield"), this yoyoing looks quite good and might bring them back to a respectable company.
no, just no. already from the 2 reviews that have come out it looks horrible, runs out of spin really fast, the slightest bang on the floor will make the balls from the bearing fall out. there is just fail written all over it.
also, the synergy is a good idea, it didn't play half bad either but it just needed some improvement and i really hope yoyojam brings it into production soon with those improvements.