How are you meant to use the middle mouse button? I am switching to Blender from Maya, I was really happy when I heard about the 'industry standard' keymap, but there are many tools missing in there so I thought I would try out the blender keymap, but it feels quite uncomfortable panning around with the middle mouse button, how are you meant to do it? Do you have three fingers on the mouse and use the middle one for the middle mouse button? or just two fingers and the index finger switches between the left and middle buttons?
I use my index finger and switch between the left and middle buttons. You won't need to use both buttons at the same time. If you want you can use three fingers on the mouse, but it's not necessary.