The good news: 100% on all NW operated flights.
The bad news: 50% on all CO flights (except full fare)
While it could have been worse, this still severs the alliance. And since I don't live in an NW hub city, that's a significant hit. For me, it's only the combined operations of NW and CO that formed a "virtual airline" of reasonable proportions.
No way can I manage flying only on NW's network -- it's simply too small and inadequate as far as flight times and frequencies go.
Sadly, I think this is it for me. I'm just going to have to pay the domestic upgrade Gods on AA. Fortunately, I've got 50,000 miles of international flying to do before year end to help build up a balance.
Steve