my guess...........
is that, if you are stopped, they will run your license on the officer's computer in their vehicle and see that you have a KS license. What I would suggest you do is to keep the weapon in the console, glove compartment or trunk. You do not have to have the compartment locked, just has to be concealed from view. The law in SC is that if you are approached by an LEO, you have to notify them that you are a CWP holder. When you do, they will ask you if you are carrying and, if so, they will ask where. Now that is the requirement for a SC CWP holder, and I have been through this scenario with a LEO and, in my experience, if you tell them you are a permit holder and where the weapon is when they ask, you are fine. If you don't tell them and they find out, now that could be another issue. I do not know what the requirement is for an out of state permit holder however, my guess again is that it would also be that you are required to notify any LEO when approached, particularly since most states require you to obey their laws while in the state and your permit is in another state. I'm pretty sure if you have it in your glove compartment you are just as a regular citizen would be ok, because you don't need a permit to posses a handgun in your vehicle in sc as long as it is in the glove compartment, console or trunk. The safest choice would be to have it in your trunk but obviously that means it's pretty much unusable if the need arises.