lukaszu,
I OC into any business I don't see a "No Guns" sign. Including Wells Fargo.
The Wells Fargo branch I frequent most [here in Colorado Springs] is @ N. Powers & Briargate Pkwy. Next is the one on Research & N. Union. And once I went to the Wells Fargo @ N. Academy & Austin Bluffs. No problems at any of them (some customers occasionally looked at gun but no one said anything). I was in the Wells Fargo on N. Academy (7473) once but was not OCing at the time, so don't know how they'd be.
Not only were there no unpleasant experiences, 1-2 of the tellers @ the Powers & Briargate location seem very pro-carry and 2nd Amendment oriented (one reason it's my preferred branch). IIRC, they have a CC permit themselves and at least CC if they do not OC. The last time I was there I was getting a money-order and cashier's check (needed for my application/appointment to apply for my CC permit @ the Sheriff's Office) and of course, they noted to whom the checks were made -- and guessed I was going for my CC permit.
Still, every time they see me in there, I am OCing. Have not, however, noticed anyone else OCing though [@ Wells Fargo]. But that's not surprising, as most people don't OC anyway...
The only OTHER OCer I've seen here in COS was soon after I arrived: At the Village Inn @ Woodmen & Duryea. We talked for a bit, but frankly I didn't even NOTICE he was OCing right away...so much for people being observant! I've seen no other OCers since...
My OCing up in Parker brought some comments, but none were negative. I guess they don't see people OC much in Parker...
:-(
-- cloudcroft (formerly of Galveston, TX)