Makes me wonder if people actually are, or if they have just learnt to do specific things with the opposite hand.
If you're ambidextrous then whatever you do with your right hand you should be just as good/comfortable doing it with the left.
I'm right handed.
Only thing I do left-handedly is hold my knife and fork. (Fork in right, knife in left)
I do everything with my right, including drinking and using utensils.
For people who can just hit a baseball left-handedly, you aren't ambidextrous