SASI is currently operating for example stockholm-oslo and stockholm-copenhagen flights...
I remember when norwegian opened first Spanish base in Malaga they were doing the same, Spanish crew being send to scandinavia to operate flights from there...
I do believe sooner or later SASI will stop operating flights that start in Scandinavia, but they will still operate flights from LHR and AGP with those t&c...
In Norwegian it took 5 years to sign CLA for Spain, and now they have 7 bases in Spain...