Quite frankly, I have been considering this very issue in my somewhat extensive musings on the possibilities.
Which hand did
Gandalf wield
Glamdring with? The right? Then maybe unlikely he wore a ring on the right. And yet... he was not a constant wielder of the
sword, though he wore and brandished it often to good effect, and just pulling it out seemed to make some
Orcs die in droves....(kidding).
So I've added research of which hand Gandalf may have used for what, to my research list on the matter.
Unlikely the knowing will change my predilection...but it's the knowing I seek. The knowing. (Color me an obsessed Ent, whatever color obsessed looks like.)
No stone left unturned, as some say.