There is a third option for Nvidia: no supporting dynamic switching but only the Nvidia card and managing the Intel card like a bridge for data. It is probably more realistic than dynamic switching...
Personally, I would be very surprised that Nvidia does not try something to make its cards work on professional laptops such has Dells for example. At my company, we usually do not buy desktop computers but Dell's laptop and we prefer Nvidia products. The developed software may be later used on 2 QuadroPlex connected to 8 + 3 high-res projectors (1920x1080) in a virtual reality center (a CAVE-like).
Of course if Nvidia is unable to propose drivers, our next purchase will mainly consider AMD products... and our partners will probably follow us
