I expect to do a tow for over a month soon. No way would I get the flash and then run that in mine for the entire towing trip. That would trash my clean EGR system.
Then there is the issue of that extended warranty if I got it done before leaving. When things broke down, which I expect will happen with the stock tune and my long-ago turned off systems, I could find dealers around the country and let them deal with it while I sit in campgrounds for days/weeks/months waiting for them to fix the unfixable.
So I head out with GDE working and a smile. With my luck there might be an issue and I will have no warranty and the option to do a complete delete on the road to keep things running or maybe have to do more than that? No settlement for me then either.
Should I worry? Nah - I have beer and GDE.