You will need to maintain a bank account.
Why?
I've seen a couple of references to this in this thread alone. Why would you need a bank account for a trust if the trust doesn't hold any money?
My NFA trust only has in it physical items. Specifically, an SBR. Don't need a bank account for that.
And really, it's a bad idea to make anything but NFA items part of your NFA trust. If you want to leave money to someone in a trust, do it as a separate trust.
Boba: I have a trust. I built the SBR that's in it. I'm a lawyer. That doesn't mean I have any desire to talk to strangers on the phone about it. Especially since you might believe that we therefore have a attorney-client relationship. (And as a lawyer, your subjective belief is what gets me sued, unfortunately.) So I'm not gonna go giving you legal advice, unless you happen to be in Kentucky, which is the only place I'm licensed to practice. (And I'm not a trusts-and-estates lawyer anyway, so my advice might be of limited usefulness.)
I imagine that others are right: most people are either lawyers, in which case it only helps if they're local to you, or they're not trust experts, even if they have one, in which case they can't really help you.
On the other hand, if you have general questions about trusts, why not ask them? Some folks here may well be able to answer those questions, and since this is a very popular forum, the information posted may help someone else later.
Aaron (Standard disclaimer: I'm a lawyer, but not YOUR lawyer)