The firearms are concealed, sure, but you can still talk to people. :) I do know a reasonable number of people who have concealed-carry permits, and none of them carry a gun regularly, if they're telling the truth, because it's too much of a hassle and they don't normally feel a need to. They got the permit so they can, but it doesn't obligate them to actually do so. My guess (but it's a guess) extrapolating from that is that only a small fraction of permit holders actually carry at any given time. But it would be nice to have a more solid estimate, I agree. The number of permit holders itself is about 2% of the population, but I haven't found an estimate of the utilization rate.