There are a whole lot of opinions in here, most of which I agree with. I myself lean more toward the combination of using the front brake and gradual downshifting while slowing down, and keeping the bike ready for whatever I may need it to do in a moments notice. Sure, it takes more coordination, and practice, but like someone earlier pointed out, it will become second nature.........naturally. I can think of more instances, where it would be a BAD idea, to just use the brakes when slowing down, than I can to downshift and use the brakes together. I primarily use my back break when I am doing in-town slow putting around, and don't need to stop abruptly. That front brake is touchy! Even when I use it, I only rap about 2 or 3 digits around it, tops. I don't really know that much about the internal workings of a tranny, and just how long a clutch will last, but I do know that the clutch plates are considered a "consumable" part, just like hoses, gaskets, etc. There is no avoiding repair and maintenance costs over the life of any machine. If you beat it up regularly, it will beat up your wallet.......
Aaron