Chimay Keg vs Bottle

I am considering ordering a keg of Chimay Cinq Cents from my beer guy. But it seems to me I remember reading about keg vs bottled and how most people preferred bottled, something about the kegged beer is pasteurized and bottled is not.

Does anyone know anything about Chimay kegs? Are they pasteurized? Do they use the same coupling system that standard kegs in the US normally use? Thanks.

This has probably come up already at some point in a thread but I couldn't find it when I searched...