I just booked Camp of Champions yesterday night, and have been looking into the byo/hire bike situation.
I am going to byo for a few reasons:
1) I know my bike pretty well, and will have it dialled in for my riding style before i get there. No rude surprises!
2) Hiring looks to be quite expensive. I don't really like the way Glory's ride (one mate has had an 08,11,12,13,14 model).
3) I'm pretty good at maintenance (do all my own work), so anything that breaks will just be parts. Might even bring a few spares to keep me going (pads, chain, derailleur...)
That being said, I thought they didn't do the demo bikes that jazza_wil alludes to. It is still quite expensive though, but i guess the lack of worry about getting your bike to/from Whistler, and the damage thing is a big pro.
I'm in a bit of a stick, as I'm doing some other travelling after I finish @ Whistler. Going down to LA/Vegas for 8 days for Contiki, so I can't bring my bike with me. I'm therefore storing my bike @ LAX for $12 a day with LAX Luggage Storage. The rest of the costs are as follows:
Syd-Vancouver: CAD70 for the 2nd bag declared as sporting goods with Air Canada (one way)
Vancouver-LA: USD50 for the 2nd bag declared as sporting goods with Alaska Airline (one way)
LA storage: USD12 per day for bikes
LA-Sydney: USD35 for the 2nd bag declared as sporting goods with Virgin Australia (one way)
All in all, it looks to be the better option in my case. I will give the bike a bloody big service before I go to minimise the chances of shit breaking due to bad maintenance, and anything else I'll just have to wear.