From someone that used to work at a bank:
1. If your assets do not exceed substancal amount, they will just comment that they can "do without" your business. Money talks with banks and they are not making much off your measly $1000's of dollars but are off the major companies that bank with them. If those companies stay even with the sign, you are nothing to them.
2. Many "main" banks are headed in this direction. The reason being is that the tellers and employees "feel better" thinking that guns aren't in the bank (maybe with the exception of the security guard). There is no logical reasoning behind it.
Now, with that said, I would take my money elsewhere, namely, a credit union. With the law being changed it is easier to get into a credit union then it was before. Even if you don't attend a chruch, you can get a pamplet from a local church and say that you attend and that satisfies the law.
Reason for the credit union:
1. Credit Unions are customer owned. When the big banks sit behind closed doors and create policy, credit unions are open to all members to attend these meetings. You have a say in how the credit union is run while with the banks you are nothing and cannot attend the meetings.
2. I've noticed that most to all credit unions do not have any signs (in my state anyway) and don't even try to hint that guns aren't allowed. Some of the major banks are trying to scare off CCW holders by placing no gun signs on the front doors but in this state, those signs aren't worth the paper they are printed on.
One of the reasons that I switched from Wells Fargo to my mom's credit union is due to Wells Fargo put up one of those signs. I explained to the manager that the signs weren't worth the paper they were printed on. He said that they knew that but if they could fool one person from carrying in a gun then it was worth it (see the hint here).
I went to my mom's credit union (for her) and the lady, doing her job, talked to me about coming to the credit union. At the end of her spill I asked her if they honored CCW holders. She went and got the manager and he came out, handed me his CCW permit, and said, well, they employed me didn't they.
Needless to say, I don't bank at Wells Fargo anylonger
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*Oh, he was the one that told me how to become eligible for membership. I wasn't a federal employee, state employee, or any of the other things but I "proved" that I was a church member (and ended up attending that church, go figure) and that was all it took.