Ok folks my 2 cents.
I enjoy shooting and cleaning my firearms, so I enjoy breaking them in. I believe that any method of 'breaking in' a barrel is better than what my dad did with his first guns. He use to just shoot a box when he got them, to get experience with it and sight it in, then he would clean it. After that there were the 'check sighting' rounds (3 or 4) every year before deer season from then on out. This to me makes me think of my wife and her cars before we were married. She would buy a new car, drive it, maybe change the oil when it was first recommended, but then maybe wait till 5000 miles. That was her method until she got a new car, maybe change it maybe she wouldn't.
I believe that cleaning anything you care about or want to keep for a long time is a good thing, whether it is a pair or shoes, a car, or a rifle.
I believe that cleaning a rifle often in the first 100 rounds is a good thing, with all the pressures that build up and bake grime into the barrel rifling time and time again, how can that be a good thing?

I'm not saying that you should use every cleaning liquid you can find after every round, I'm just saying run some 'whatever you use' with some patches down the tube more often when it is new. I'm sure to some 'breaking in' a barrel is taking away from the barrel life, but that's why I bought it, to shoot it, and if shooting it is taking away from the barrel life, good, I hope that once in my life I can "shoot a barrel out'. I don't see it happening, but then again what is your definition of shooting out a barrel?? Let me know if you have shot out a barrel, and I will buy your old and shot out gun for a modest price.
Thanks,
~DoubleA~