Anyone who thinks they can feel if a tube was patched, has a hell of an imagination.

I use self-adhesive patches on the road just to get home.
Locate the leak, pop the bead, apply the patch; No wheel removal needed.

Then when I get home, I swap the tube with a previously patched tube.
Then replace the self-adhesive patch with a real patch, and put the tube into standby stock.
In my experience, self-adhesive patches don't last; In freezing conditions, they don't work at all.