I do have a drinking gourd I made a long time ago (bought a dried gourd, cut the top off, used a bottle brush to get the seeds and any stringies out, then coated the whole inside with a few coats of beeswax), looks just fine hanging from the belt, I mostly don't use it often because I just don't trust the cork... but with the beeswax smell, it's very nice for mead.
I got my hands on a bunch of funny looking little gourds this year, they look like little green chthulus or something with tentacles, if I can get them to dry without going mouldy, I'm going to make drinking cups out of them.