People change over time. I've heard of a lot of people who were subs that transitioned into Doms. If you can't decide, them be a switch and be happy that you enjoy both experiences equally.

Screw using a definition. Just experiment and tell people what you like

I think you are a switch like me!

I picked switch, but I also think you might be a sub the more I think of it. Think about this. I am a definate sub, but I like giving my husband a blow job and bringing him to orgasm. I think of that a a sub role though, not a dominant one. Its okay to please your partner while still being submissive to him.

I answered switch, but I think it's important that you not get caught up on labels and try to fit yourself in some imaginary box. Just do what you enjoy, what you call it doesn't matter.