More likely to scare, but since it's in a sealed case and looks like a firearm it's easier to get the attendant to accept that it is a firearm when checking it.

More likely to scare, but since it's in a sealed case and looks like a firearm it's easier to get the attendant to accept that it is a firearm when checking it. It matches their expectations of what a gun should look like. And since it's in a sealed case nobody unexpected will see it anyway, so scares are unlikely.