Car Safe big enough for handgun IN IWB holster

I'm about to get my CCW this week. Once you add the size of my handgun to the IWB holster (Aliengear cloak tuck), it's pretty large and I'm concerned it won't fit in most under-the-seat lock boxes. Does anyone have any suggestions for lock boxes big enough to fit both the gun and holster? I'd like to remove the gun with the holster rather than holstering/reholstering every time I need to go somewhere where weapons are restricted. via /r/CCW http://ift.tt/2sipKeq