Wow- interesting reading. When theory and real world results are in conflict it's never reality that is wrong. Damascus barrels appear to be subject to exactly the same failure conditions as homogenous steel barrels- overpressure and obstructions. Another myth bites the dust...
Given my experiences with various prejudices in the knife and sword-making industry I suppose that I should not be surprised. My lovely wife heard this and said, "Well, I suppose that we'll just have to find a nice damascus gun for you." Yeah, she's a keeper.