In an interesting demonstration of how all ergonomics is personal, my use of a Mac laptop and the repeated wrist rotation from the trackpad to they keyboard and back led to RSI.
That said, I love the Mac trackpad and it has great ergonomic potential, I just personally have to use it with a split keyboard with the halves on either side of the laptop. That way the motion of moving from trackpad to keyboard and back is a bend at the elbow, while the wrist stays straight.
Huh, interesting. I already bend my arm at the elbow when using the trackpad. However, I find the finger position painful if I'm using the trackpad intensively for a while (think lots of scrolling during random web browsing).
A few months ago I have discovered the joys of using a trackball and I think a great setup would be to fit the that between the halves of a split keyboard. I suppose a Kinesis Freestyle or similar could accommodate that.
That being said, even though I absolutely love the mbp trackpad and find the keyboard ok-ish (I have an older, 2013 model), I don't like using it with an external screen. It feels somehow off.
That said, I love the Mac trackpad and it has great ergonomic potential, I just personally have to use it with a split keyboard with the halves on either side of the laptop. That way the motion of moving from trackpad to keyboard and back is a bend at the elbow, while the wrist stays straight.