I really wish they would allow a keyboard shortcut to replicate a middle-button click. I also am transitioning from a Dell Latitude to a Surface Pro 4 and the old Dell had the middle button clicker which was awesome for 3d modeling without a mouse. Most new laptops separate the middle scroll button and usually have continuous track pads without designated clicking zones. Seperating the keys is better for 3d modelers and anyone who works with the Adobe products.
I just wish SketchUp 2018 would allow a user to have the space-bar replicate a middle wheel click so I could just hold it down while orbiting and use my other hand on the track pad for clicking. Also just orbiting by holding down a key is a lot easier on the hand then having to use the middle wheel button on a mouse over time so it would be better with a mouse also. Again, the old Dell was great at this and excessive middle wheel clicking noises were reduced.