I'm sorry, but this makes absolutely no sense. You use the trackpoint with your index finger and click with your thumb. As I mentioned earlier, the whole idea is to seamlessly transfer between typing and mouse. Also having the buttons so close would make it uncomfortable, like you're trying to pinch on it.
If you're using your thumb to operate the trackpoint, you're using it wrong. You can't even control the cursor properly that way, you can't apply pressure evenly while moving the trackpoint and clicking like you said.
I'm using the middle finger to operate the trackpoint.
Now, on a regular (large) keyboard it makes sense to have it on GHB because there is more space between the keys, the whole keyboard is bigger, your hand is relaxed - but this isnt the case.
This will have smaller keys with less space between them, click buttons will also be smaller - if you want to use GHB position your fingers will always be close to each other with your hand contracted which results in muscle strain.
If you want the feeling you get on a thinkpad you need to use TYG / YUH and make the click buttons larger - but even like this, the keys are smaller.
Most people are not used with a trackpoint keyboard, for them the trackpoint is just "a mouse like thing" so it makes more sense to use it like this:
- middle finger on the trackpoint;
- index finger on the left click;
- ring finger on the right click.
I hope it makes more sense now.
What I'm more interested is the whole keyboard layout - I made the layout mockup above based on a picture I got from liliputing
This was the original, if you don't know what I'm talking about.