As long as your split hives are rather weak then the foragers/guard bees will not bother you. Keep them small so they cannot get mean. No guard bees to sting you.
On your splits, be sure to have enough mated queen to requeen them all. It will be another month or 2 before the mean guard bees are dead. Dividing them is to weaken the hive so that not many guard bees are issued.