Not even remotely comfortable, convenient or helpful. The costuming was about soliciting fear of revenge, not communication. Definitely ceremonial in nature, though.

"Trying to try out an old ceremony converted to a new purpose, yeah. This is... similar to the outfit I wore in that memory you saw. It's what a Hashihime looked like while doing Hashihime things." When murdering cheaters, she meant. "Tifa suggested I try something else, so I'm ... doing a little of both?"