I chuckled when you mentioned Kano Shihan and keikogi. In the circles I run around in in Japan, keikogi means the nice, traditional indigo uwagi worn for kendo, kenjutsu and related stuff. The thing Kano Shihan created is usually referred to particularly as a judogi. It may be because I spend so much time in the koryu world and so little time in gendai budo circles these days.
The following link will take you to photos of an embu at Shiramine Shrine, near my home in Kyoto. The Shiramine embu has practitioners from koryu like HNIR kenjutsu and kusarigama-jutsu. Note from the photos that the koryu practitioners do not
wear keikogi. I am (tabun) sure kendo's indigo uwagi is adopted from Kano's design. Kano designed a keikogi. If you wear it for judo, it is is a judogi. If you wear it for kendo, it is a kendogi. If you go into Tozando, they are selling different things for different arts, but the differences are recent and pretty insignificant, like where the seam is.