I think it’s best to have the Jazz focus their efforts and evaluation at the SLC summer league. Not only is there a monetary reason to do so, but they are also able to control the environment as well.
As I’ve been watching summer league this year, I’ve found myself thinking that the Jazz should highlight the 5/6 guys that they want to in SLC, and then sit anyone that they KNOW is going to make the roster when they head to Vegas. Use the SL games down there to turn over as many rocks as you can and the find the next Jeremy Lin, Royce O’Neale, etc.