I agree with you to an extent. It's like saying "I don't care how I look, I just wear whatever is comfortable" which is fine when you're chilling out around the house, but it may not work when trying to find a job or to meet girls.
I hear you. I guess my 'gigging' is like playing at home in terms of how comfortable I feel and how interested anyone is in how I look.
My 'showmanship' is just me moving around, enjoying the music and communicating to the crowd that it's okay for them to do the same. If a 'correct' strap length kept me stuck to one spot, unable to really get into it, then I would probably sacrifice some comfort for overall freedom of movement.
Interesting discussion.
