yeah thats not actually much difference between CX and KA as far as the licence and type rating goes.
In CX you have a CPL and a P2X rating which is not recognized anywhere else, it will take you 4-5 years as an SO before your upgrade and you get a marketable P1 rating.
In KA you have the MPL until you meet the hours requirements for a CPL or MPL, this will take a similar time frame.
Frankly if you're a HKG local it really doesn't make much difference which licence route you go down, however if you're an expat looking for a quick type rating and stepping stone, you need to consider your options carefully.