I always find these threads amusing. Like synthetic motor oil vs non synthetic LOL.
I own both TC & CVA ML's. Have used bore butter for 15 years. If it "caked up" a barrel the user was applying waay too much.
I shoot BH209 in my CVA, use CVA foaming barrel stuff and it cleans very well. Patches come out spotless. Takes longer to clean the breech plug.
In short, used properly, nothing wrong with any of these products.
I never heard of a motor failing because of the brand of oil, only because there was not enough. LOL