Split grade printing gives alot more control over local contrast. I don't know about the rest of you guys, but very few of my exhibition prints print straight without dodging and burning. Being able to dodge and burn during both the blue light exposure and the green light exposure produces prints that can't be made with single exposure dodging and burning. With split grade printing you can dodge the highlight and midtones without sacrificing blacks in the same local area, and converse is also true. Thats reality! I don't diagree with the article quoted, my critique of the article is that it totally ignores why split grade printing is so useful.