I have a TPM that I use in rotation with other similar sized bags. I honestly don't carry much with me on a daily basis (wallet, keys, phone, lip balm, sunglasses), and it's the perfect size for it. I technically don't really *need* to carry a bag, since all the above fits in my pockets, but I prefer my pockets empty, so this bag works for that purpose. I'm in NYC if that matters.
I'll add that I've had a custom made strap that's significantly wider that makes it look less feminine (though I didn't do it for that purpose), but as I said, I'm in NYC so it doesn't really matter here.