I'm realizing this.
http://www.losaltosbarbershop.com/no-reservations
See that? TRADITION. Explain to me why they emphasize the no-appointment part. It's because they understand it's a bullshit business model, and it isn't conducive to proper customer service. People thinking they can spout for just 15 seconds on the phone, then strut themselves into the barber seat without waiting. Fuck you.
So you're cool with same-day appointments then? Because that place both encourages you to leave during the waiting period, and expects to be so back logged on Saturdays that they have you take a number. So it's entirely possible for somebody to strut in in the morning, leave for an hour, then come back and slide right into a chair.