Good one, Jana. Why do we have to have "either/or."
Abby, Go to the specialist as a referral. Then see what his findings are. You don't even have to discuss having him as a doctor yet. If his findings are that you indeed have MG, and you like him, you could always see him from then on if his patient load will allow for it. Or, like Jana said, have him as a specialist if and when you might need his expertise!
My regular neuro is not an MG expert but I trust him. That can work for or against you, depending upon a doctor's willingness to learn or help you when MG gets tough. Usually, if you have a crisis, it's the hospital team that will handle it, along with your regular neuro.
Take one step at a time and feel the situation out.
Annie