I must be a belt and suspenders type guy as well. I carry a spare tube and patches.

I've used the Park Glue-less with much success. I sand the area and then wipe with one of my stash of alcohol wipes I keep in my camel-back. I've had several tubes with glue-less patches that have lasted over a year.

However, as a general rule, I replace the tube first (easier and faster) and then patch the tube back home in my garage using the typical patch and GLUE. I save my glue-less (more expensive) for those rare instances when you puncture your spare.

I usually wait until I have about 10 tubes and then spend one evening doing nothing but patches. BTW, I live in an area with LOTS of sand spurs and thornes, so I go through a lot of tubes.