Nah, from the limited gameplay I've watched and his measureables/stats, I think his absolute ceiling is "Great Value Tebow", and the real Tebow couldn't even find a team in the league.
Taysom Hill is a unicorn because he's insanely athletic even for an NFL player (4.4 forty, 40" vertical, 700 lb squat). Tebow was ridiculously athletic too (4.7 forty at 245 lbs, supposedly 450 lb bench and 650 lb back squat, nearly 40" vertical). And they're still fringe players.
Sluka just isn't at that level athletically and he's a worse passer too. Shifty for his size though, does a great job of making guys miss in the open field and then powering through arm tackles. But I just don't think NFL defenders are going to be missing those tackles on him.