A friend has one - a custom job on a Remington short action. It shoots great with factory ammo, even out to 700+ yards.
I personally scratched the 6.5 itch last year with a Tikka T-3 Hunter in 6.5x55 I bought used. It shoots great - 10 shots into an inch with loads I haven't developed much, and recoil isn't bad after replacing the factory recoil pad.
The good things about the 6.5 CM are that it's new, and chamber dimensions are standardized with accuracy in mind. Factory ammo is accurate. It's designed as a long range round. It doesn't kick much.
I don't have one - yet. Who knows how itchy this 6.5 rash will get....
