Just idle speculation Richard,but I believe they have the -41s on excellent terms,and BAs lease of them runs to 2007ish. Plus they are probably ideal in size/economics,so don't see any change for at least a couple of years.
In fact 2 have just been repatriated from the US,N550HK/N551HK. I can only think of one operator these could be for(it starts with E!)(Unless it's Alpha 1--OK,stupid idea!)
Did see some time ago that 5 Saabs were planned,don't know if that is still the plan.