Hmm...interesting question. I dont see why it wouldnt work, considering insulin doesnt need to "kick in" like regular gear...it will help with the nutrient uptake during that specific day...so who knows?
dont expect much in local growth. it isnt going to make enough of a difference i think. insulin dosnt jsut store glycogen and amino's in the muscles worked, it stores them through out your entire body.
But muscles worked would be in greater need of glycogen and Anabolic Androgenic Steroids (AAS) than a muscle that has not...so the benefit would go primarily to the muscle that has just been worked out, no?
i see where your coming from but i still dont think it will make a noticable difference when you come off the slin. remember also its not jsut post workout that the muscle grows, its for the entire recovery process after. so one shot of slin isnt going to do a whole hell of a lot.