well, I can only speak from my experience... which is not extensive by any standard but here it goes...

I started as a switch for the same reason, I enjoyed both sides of the coin and dabbled quite a bit under that flag. After a few years, I felt like there was something missing and evolved into a sub.
Not that it has stopped there... Master understands where I come from (so to speak) and I service-top Him sometimes or outright top if with play partners.

So you see, don't prevent yourself from making the jump just because you don't know in which label you're going to land.
Have fun and I can't stress this enough, do EVERYTHING in your power to stay safe. Anybody here will be more than happy to answer any question you might have.