Well, mine literally said to me today that if a client is very reliable (like me--I don't no-show, for example), then he'll be more flexible with them about certain things. Like in the current example, I can let him know about a potential time change for my session (depending on my travel plans) with less than 24 hours' notice (I'm scheduled for one time, but now I could potentially be traveling during that time--he offered a later slot, and instead of requiring 24 hours notice, he's saying I can let him know a bit later). So that's one answer to the "are all clients equal?" question for him.