Yes, to the letter of the law, concealing a weapon, on your person, or carrying in a case (not in your car) is permissable only with a state recognized CCW permit.
There are some things such as right to privacy, private property. Some states actually identify that a CCW permit is only required for public places and not required to carry on/in your property. That usually includes all dwellings and land, but does not include vehicles that are not on your property. Unfortunately Nevada does not have such language that I can find.
I've seen this argument a number of times. It would be difficult to enforce. Law enforcement would be hard pressed to know that you were concealed carry on your property. If somebody sees it, well then it's in plain sight.
Same thing with carrying in a case. Whether it's in a briefcase, back pack, purse, or yes, even the case that the weapon came in when you bought it, if you carry it without a CCW, you're breaking the law. Which begs the question, when I buy my new semi-automatic with the Halo sights ;o), and put it in its brand new case, unloaded, and carry it, out of the gun shop, to my car, am I breaking the law?
The simple act of me carrying a case does not constitute a search, regardless of what they think I'm carrying. Do I carry a firearm in a case? Nope, not usually. I open carry, until I need to put my firearm in a case, like when I know I'm going through a Federal Gun Free School Zone (which again, is difficult to enforce). I'll pull over, unload my firearm and place it in the case and lock it. FYI - This is NOT brandishing.
If you want to take the chance that you won't get caught, that's up to you. I don't recommend for or against it. If you want to avoid the hassle, get a CCW permit.
