Great news
Ken Borek Air has extensive support and experience, so a practical choice.
Lots of good seaplane operators in US/Canada using many different types (Beaver, Turbo-Beaver Turbine- Otter Twin Otter etc)
Me thinks the C208 Caravan on floats to be a better deal; cheaper to operate, carries the same load over similar distance, and in HKG no icing problems to hamper the operation. Mind you the sounds of R985's would be great in HK skies again!