I was fitted for my putter at CC and could not be happier. This was last summer when they were offering free putter fitting with the purchase of a new putter. I wanted a new putter anyway, and paid the same price for it as I would have anywhere else. I wasn't interested in a $3000.00 Scotty Cameron but have always wanted to join the Scotty cult so that's just what I got.
My next venture at CC is going to be for a driver fitting and I have all the confidence in my fitter that he's going to put me in the right shaft. I made it clear to him when pre-scheduling that I wanted to evaluate for a new shaft because I wanted to keep my same driver head. Remember also, that when you go to CC and have a driver fitting you are under no obligation to buy the shaft from them. It's perfectly acceptable to take all the data that CC gathers during the fitting and buy your shaft somewhere else cut to the parameters obtained during the fitting. The only thing lost is if the lie needs to be adjusted, you'll have to have someone else do the bending since CC isn't building the club in total.
Someone else made the comment to be prepared for sticker shock. I believe this is true of any of the "retail" fitting establishments. At least at CC you're getting an experienced fitter and not someone who was folding clothes at the GAP last week.