Help! I switched to Halmak on PC but can't it to work on iPad Pro keyboard!

[sk8bandit]

Help! I switched to Halmak on PC but can't find a way to get it to work on iPad Pro keyboard!

The theory behind Halmak got me to switch and now that I've developed some proficiency with it, I am enjoying it. That said, I am completely unable to swap layout muscle memory back and forth as some people report being able to do.
I've since worried about having to get a job where I have to share a machine with other people or are unable to switch layouts for security lockdowns... I tried to switch back and just couldn't. QWERTY sucks. I mean, I know that muscle memory is mostly gone, but it definitely feels like poor design... so I decided to stick with Halmak!

On PC I can hotkey back and forth between layouts with shift+ctrl if I need to.
On iPad I've found apps to swap the key placement of the custom On-Screen keyboards.
I need help making the stock iPad Pro keyboard work with Halmak.