I just clarified this, Chanel didn't stop paying its own SAs commission for bags, they stopped paying department store SAs commission for coming into the leased store and selling items.
My home boutique is a store inside of Saks (situated in its own alcove, separated from general Saks sales floor), and carries bags, SLGs, scarfs, sunglasses, fashion jewelry, and RTW (no watches/fine jewelry/shoes), and out on the general Saks floor, there are Chanel tables/cabinets for shoes and watches within their perspective sections. There are 2 populations of SAs that can service clients, Chanel SAs (employed by Chanel), who can only sell what's inside the store (so no watches/fine jewelry/shoes), and Saks SAs (employed by Saks), who can sell everything inside the store and out on the general Saks floor. Now Chanel has stopped paying commission to Saks SAs for selling anything inside the store except for RTW, but obviously the Saks SAs can still sell bags from other brands that exist within Saks.
My SA, who is employed by Chanel, is actually quite happy about this change, because she no longer has to compete with Saks SAs for sought after bags, and now has more stock to offer her actual Chanel clients. She used to get quite irritated with Saks SAs when they come into the store and selling everything remotely, and this move to cut commission from Saks SAs levels the playing field for SAs like her who can't dip in both pools.
So in short, Chanel SAs are still being paid commission for selling bags.