When I first came to an Aikido class, I was "a visitor". Once I started attending and paying dues, I was "attending class", or "going to Aikido". If you asked me a few years ago, I might have said that I was "studying Aikido".
Now I would say "I am an Aikidoka." It's not about how good my waza is or what rank I hold. It's that I have integrated Aikido into my life. It permeates other parts of my life and cannot be isolated into a time frame or a class or a dojo.
It is part of who I am.