SAS is currently a great bet for people who never touch SK metal. Eurobonus consistently gives more points to flights on alliance equipment than to flights on their own, and currently has no demand for any flights on SK metal.
The big question mark is what will happen in the future. A good bet is that if it is bad for SK then they will pursue it, but who knows. SAS has never been run logically, so it is not really possible to guess what they will do...