I've come to several folks' houses whom I wasn't sure of their opinions on CCW's and was just upfront with them - and not just because it's Arkansas law. I've done so on out-of-state visits where I wasn't required to inform home owners. I have yet to be denied entry. As jlamb said, to me its about respecting another persons home. I'm not all ate up about whether or not someone has the Right to carry a firearm or not, but I'd like to know that someone coming in to my home is armed. That's for a couple of reasons:
1) it allows me to know who else might be counted on to defend my family, other guests and - conceivably - myself and/or my property in case TSHTF;
2) if it's someone I don't know, I might want to get to know them a bit better before I just let them roam about my home. While they might have been vetted by their state of residence, *I* may not know that person at all. I like to think I'm a fairly decent judge of character, so would prolly get a good/bad vibe fairly early on;
3) just because it's the right thing to do, IMNSHO. To how I was raised, it's disrespectful to bring something in to someone's home that might conceivably kill them and theirs.
Just because the state vetted you on a background check - which is all paperwork, I'm pretty certain that in Arkansas they don't go around and talk to the folks on your application sheet, as none of those folks said they'd been contacted - doesn't mean that you're a responsible adult or firearms owner. I've got kids and would rather not take a chance with someone leaving their firearm lying about where my 4 year old might pick it up and then Something Bad Happens.
If it's someone I know - even if they're not a good, close friend - I seriously doubt I'd have a problem with that. If you're someone I know, then you know how I feel about firearms and it won't be an issue. If it's someone I don't know at all, but they're accompanying a friend/acquiantance, I doubt I'd have a problem with that, either, but might well reserve the right to talk to you a bit before feeling fully comfortable.
If I don't know you, I'd want to go over my rules for carrying in my home. They're simple rules, which mostly are confined to "leave it in your holster unless you absolutely have to pull it out" - sorta like how I'll be talking to boys who want to date my daughter in a couple of years and the same talk that MY boys will get when they get old enough to start dating. If you're spending the night in my home, we'd cover where I'd prefer you keep your firearm so that there's no accidents from a child picking it up. I've got a couple of in-car safe's that can easily be adapted to a bedframe and the combo set to something that only you and your SO would know.
Under most circumstances, I would never require a guest to spend the night in my home disarmed if they came across as a responsible CCWer. If I got a bad vibe from them, tho, I prolly would do so. Actually, if I got a bad vibe from that person, I'd prolly ask them to leave and to not come back.
Let me put it like this... If hand grenades were legal to carry, wouldn't you want someone carrying one to inform you of that?
Arkansas Concealed Carry Instructor #12-751