I had a concern mainly for the cabin luggage allowance but certainly there seem to be big problems within the OW interlining agreements of checked in luggage.

What I will do for my ORD trip, is to fill my brand new Rimowa Salsa Air cabin trolley up to exactly at 8 kg:s and a laptop case filled with iPad and the heaviest travel items. I suppose I can survive a week without checked in baggage. So far I have never met trouble flying domestic AY legs with similar pieces and expect not to have such this time either.