Hehe, I guess we could argue about this forever!
My understanding from the NaturalPoint forums is the only reaons TrackIR was limited to VC in FS9 was because the flight sim software couldn't handle it.
Everyone has their own preferences. Having watched your vid again I can only say that panning around with the 2D panel still in view is not natural. Either there's a conflict of some sort or TrackIR isn't as fully compatible with FSX as the developers would have you believe.