I'm always going direct to the bass player's house from a job site. I don't like to leave guitars in the car all day where I can't see them, or deal with temperature extremes. I usually just take my Burny SG. Like this week, I'll be working in Southern Maine every day, then rehearsing in Central Mass. on Tuesday night. The two hour drive should warm the guitar up some before jamming. It's not like I go to the same job everyday, and can stash a guitar inside a building.
I keep threatening to leave a guitar or two at his house, but we play too sporadically for me to want to leave guitars there, on top having some amps and the P.A. system, and other goodies there. Oh, the drums are mine too. He has enough of my junk there.