I have no idea.
In Thailand immigration officers require you to have a certified statement from the bank, freshly obtained on day of the application. You wouldn't be able to do that here, so I'm not sure how it will work. I believe you need to show proof of funds in Vientiane and they have been doing it that way for many years, so it will probably work the same as that, however that is.
Im sure more info will be forthcoming soon 👍
If you have the funds, isn't it easier to go to a local imm office?