Patagonia is unlikely to have anything that carries a laptop, and if they do have pocket vests, it's probably from their fishing range which is not carried in HK. Edit: just checked a Patagonia store as I walked past one. Nothing there with loads of carry options.
I used to have a jacket with a pocket that was big enough for a laptop at the back, but putting anything that heavy would completely mess up the comfort of the jacket as the neck would ride up at the front.
Another option might be a massive kangaroo pocket, like the Paramo Velez Smock. Come to think of it, they also do photographer vests. But they're found in the UK.
There are photo vests for sale in HK, but I cannot recall where I have seen them.
https://www.paramo-clothing.com/en-g...A-000032E7923D