I've actually been toying with the idea of getting one - often I take a Kindle or a tablet/keyboard (and sometimes powerbank/charger) out to the caff, and those could go in one - sometimes I need to take a laptop with me, but that wouldn't fit in one - that's venturing into rucksack territory - on bus/train trips I like to take 'cans' (over the ear headphones) which are also rucksack-type things.
A male friend was sporting one at a party recently, and
I asked him what he keeps in it. "My man things" was his reply, which I thought was fair enough

It was made of leather, and he told me he bought it in Italy, so on style criteria alone, it got my seal of approval