I have heard (re: fiberglass/epoxy surfboard repair) that cleaning with alcohol can leave a residue that interferes with the epoxy bond. I don't use it. Damp cloth is all I use. It gets the dust and grit off, and by the time I finish cleaning the shafts and inserts, the first arrow is dry and ready for glue-up.
That said, the .22 or .270 barrel cleaning brush is GREAT for rough-up. I even sandpaper the outsides of the inserts, and using the slow-set epoxy, I'm not sure you could pull mine out with a truck.
-Charlie