Personally, with; I feel more 'secure' that way. Chafing in that area isn't pleasant, and having everything organised neatly down there stops that for me...
if I'm away for a few days I will pack light and have one pair of Long Johns and several pairs of briefs.
that way I do (where available) get showers can change my underwear.
I wear mine with women's knickers. But then I am a wimmin.
I reckon its best with, then you can change undies more often than long Johns, and undies are light and take up less room than a spare set of thermals.
Of course some of the blokes on here probably never change their drawers.
Aye, but anything I wear next to my ring goes in the laundry bag at the end of each day!
I just think it's more practical when you are using them most days.
With pants, but I cut out the crotch in the long johns so I can free Mr Kipper with gloves on. What with that and the brynje top I have gained a bit of reputation...