I splurged and bought a very nice Erik Stokkebye "man purse" at one of the shows this year. It's a great bag, but I still do find myself looking over my shoulder for strange stares when I carry it.
Honestly, I usually bring one pipe with me when I am mobile. I have a nice simple leather pouch of sorts that will fit the pipe, some cleaners and my small zip up tobacco pouch. Even this I find to be a bit much at times.