It is perfectly fine to make another acount and jion another coven. For one thing every coven is different. They each have there own hopes, goals, wants, imformation, and people which makes each coven different and is very valuable. Second just like every coven, every teacher will not be the same. The way they act, look, and teach will each be different via creating an experience..So no i belive you can be loyal to as many covens as you want, for each one will be different. Also all that matters is the connection, if you have 5 covens but have connections with members from all the covens your still loyal just having a learning experiance.
Remember we are all a community, all different, and all loyal in our own way. It's up to you but i say go for it!