We used to sell these and the coffee is pretty darn good from them. Enough for two decent sized cups. Used them more as a treat than an everyday occurrence when out. But as others have said a good way to start the day - and bowels if that's your game!
As cheap as a café coffee and light to carry, so for a single day trip great as you don't have to carry the extra paraphernalia that other coffee methods entail. Though for multi-day excursions it ends up being cheaper and lighter with some of the other methods.
Nice as a wee morale booster when out on a driech day, especially with a tot of whiskey or rum added!
and some dark sugar.
And as the others have said the carry out weight is negligible if you have a decent fire going.
Nice wee review and has put me in mind to go and have a cuppa right now.