Where do you put your thumb when you are using arrow keys? Maybe it's my small hands, but I can't use my right hand thumb to hit anything when I'm on arrow keys, and have to rely on using left hand to press modifiers.

So, I use a keyboard with split space bars, and map the right one to a layer switch key, when I want arrow keys I then hold the right side spacebar, and use ijkl (similar shape to arrow keys). Feels like exactly the same [1] as using arrow keys except I don't have to move my hand.

[1] Okay, 'I' is slightly off because row-staggered nonsense but honestly it just took me two days to get familiar to it.