I use them when out camping and have a radio with me, which is all the time.
when on the team I carried them at times, but that was for UW stuff, or like what I do is keep GEL Cells topped off and floating with a charge for my Ham station at home.
A hand crank gen is better for a faster charge, but I am getting old and fat and lazy, did I say fat, so I use the panels when I out in a camp for a week or better. Weekend stuff no, I can carry the extra batteries support, hell as long as I can strap it to my back, and get help standing up...
I agree with my fellow Marylander, I feel it always goes back to power management.
AL