Loop drum brakes will never be "two-finger" brakes, so if that is your expectation, then move on to fitting a disc front end or buy an entirely different bike.
I'm not sure that I'd choose a Loop of any sort as a "stop-and-go traffic commuter bike". I know there are folks that do it, but I'd choose something disposable, cheap and appliance-like for that.
My advice to Eric: if you want a Loop, buy one and save it for the fun rides. Use something else for the "daily grind".