Hello @craig, thank you for the question!
I've been able to reproduce the zoom behavior (two fingers swipe up/down), but not the panning you are seeing by using two fingers to swipe left/right. I suspect we are using different hardware/settings.
Since the two finger swipe up/down is mapped (by default) to a scroll up/down, and scrolling up or down in Revit zooms in and out, the behavior you are describing sounds like what I would expect to see.
If you have a middle mouse button on your trackpad, then you could hold this down, and then pan with a single finger.
If you don’t have a middle mouse, another option would be to remap the middle mouse button to another button. I found the following Microsoft document with information on this for Microsoft Accessories: How do I reassign mouse buttons? If this doesn’t work for you, what trackpad and mouse (if any) do you have?
Lance Coffey
Technical Support Specialist