I'm looking to take advantage to the Ex ARN Companion special today routing ARN-ZRH-SIN-HKG-FRA-MUC-ARN, based in ZRH for the first trip I will check the luggage in directly for the ZRH-SIN leg and fly to ARN without checked luggage (as it is checked in directly to SIN), but on the return I was wondering if it would be possible to check the luggage through, given I have a ARN-ZRH flight. Booked on Swiss I guess this won't be an issue, however, if booked on SAS, do you think it would still be possible or will the agent in HKG refuse?