The original requirement was for USA bases. Then came the 'USA base with a Hong Kong report' and now we have just 'Hong Kong report'. The T's and C's offered to existing KA pilots for this deal mention that any gratuity will have the company MPF contribution deducted. So this deal is for a Hong Kong base - on the new C scale!
Although the offer mentioned positioning time, don't believe it until you see it in your contract. Of course when you see first the contract it will probably be on day one when you're committed. Then you're rooted! You will be working what is allowed by the FTLs