I recently went on a business trip, something that I almost never have to do any more.
For the last decade I have been using DE's and straights, mostly Feather AC's.
My last trip was in the late 90's and DE blades were still OK.
I did not want tho have any hassles with airport security, so I dug deep into one of my old tool sets and came up with a 80's something Gillette cartridge shaver and some still sealed blades.
Eiyiyi!, I cant believe what an awful shave those things give. It makes me wonder how I ever used them.
Next time I have to go on a trip that involves flying, I think I may just go with the stubble look.