I have used bore snakes, they work ok, no issures.
My preference when traveling is the vintage pull through. Over the yeaors I have acquired several different 12 ga versions, plus a 16 and 20 versions.
As for barrel obstructions, i keep a brass rod for popping out stuck wads in my my truck box. i think I picked it up at my skeet range proshop
I been using standard Hoppes 16ga Bore Snake to clean both 12ga, and 20ga. I had couple left from when I used to own 16ga Model 12.
Now I only use it to clean 20ga because that's all I own.