I've thought about it but securing it is my problem. I hate the thought of leaving a gun in a car anymore and believe that has a better likelihood of arming a criminal than defending against one. My brother in law had his truck broken in to at a golf course just last Sunday and got some clubs, iPhone, and a brand new Taurus he'd just picked up 2 days before on Friday. Leaving it in the hotel room is a little concerning with maids coming in and out.
I've considered some type of lockable mount so I always have a truck gun there but haven't gotten serious about it. I saw one on American Guns a while back (yeah yeah, no further discussion needs to be had on the show) where they had an under seat mount that was unlocked by a button up front in the console, something like that sounds great.