If you own a Smith & Wesson revolver with a titanium cylinder and actually read the destructions, you will note that they go on at length about a magical coating used on the titanium that is supposed to prevent flame erosion and possible concomitant crack propagation in the cylinder. They warn not to do anything even slightly abrasive to the cylinder, lest this voodoo film be damaged in some way. Therefore, I only use soft cotton patches moistened with a little CLP or FP-10 to clean the cylinder on my 296.
Maybe I'm being overly paranoid, but pictures like this give me the creeping willies.
As it is, I've had the 296 for seven years now, and it has shot a bunch of trouble-free rounds. I'd like to keep it that way...
(And yes, I know that in the linked case the problem was not flame erosion, but the aftermath is the same...)