I've talked to SCB about this and they basically refuse to let you open a bank account without a work permit because "the head office said so".
I talked to their customer support yesterday, while at the bank branch and they asked me to bring every document I used to apply for my DTV and a resident certificate to see if "maybe" the bank will let me open an account.
It's easier to buy a living tiger in this country, than it is to open a bank account.
When I applied, I submitted a brand new contract, stating I was working remotely. The contract has been active for 3 years but the updated one I sent to the HK consulate was only 4 days old.
It had digital signatures too, as I wasn't going to wait for a contract to be mailed here from Europe 😅