I hope I've let this one marinate long enough to make sense when I type it out.
Since the CYA acts like a buffer for the CL, why even use it? I'm going to be adding 2-3ppm everyday anyway. So what is the difference if I'm adding it at 6ppm or 1 ppm?
From all my reading what I have garnered is that for a given CYA level a certain amount of CL is bound up, leaving 2-3 ppm to oxidize the organic material in the water. So with or without CYA i still have 2-3 ppm doing the work. It's not like the bound up CL is going to suddenly be released to help with the oxidation.