I agree with Shayne that logistically, the Q is easier on the CLUBS to start on Friday, before the Am. Plus for a small trial, it gives the club the opportunity to possibly have 2 sets of judges, instead of 3 or 4. In the end the club is the one that puts on the trial, so whatever's easiest for the members and/or help will win out.
If it's important enough for someone to run, they'll take vacation if they need to. Me being a shift worker who works at least 2 Fri, Sat, and Suns every month, all 3 days affect me. I get to burn most of my vacation days to run trials. But that's OK, because I want to be there bad enough.
Priorities. :?
P.S. I voted to keep it the way it is, Q on Fri.