If I were to suppress a Kimber, or any other factory rifle, I wouldn't trust the factory threads to be concentric with the bore and would have it cut off and re-threaded.
I've only shot my suppressor on about a dozen factory threaded rifles.... without any issue at all.
I guess I play it safer than you.
ohhhh.... you're one of those guys who walks around with a helmet on....
You better pray to the God of Skinny Punks that this wind doesn't pick up......