You need custom switches to go around trackpoint. I had the same problem building my own custom keyboard. In the end, I opted to redesign the layout to have on

You need custom switches to go around trackpoint. I had the same problem building my own custom keyboard. In the end, I opted to redesign the layout to have one key worth of space dedicated to the trackpoint. I was able to do this because I can learn a completely new layout on a whim, but if you want to produce a keyboard for mass market then I see how this could be a deal breaker.