Probably. I would expect them to be priced in USD where possible. I also don't think they will be particularly attractive. AFAIK there is limited competition on most international routes ex-Africa and oneworld must have learned their lesson from the numerous pricing 'events' in Africa in recent years.
Currency of air fares is set by IATA, not the filing airline—it takes a while (months at least) before the currency can be changed.
Agree that ex-Africa is unlikely to be filled with bargains.