Maybe, but it might not work well in this sim. There is no way the sim can tell what your eyes are focused on so it will more than likely blur things that you need to see. For example I can't see them applying DOF over the gauges or on the outside of the pit.
One place I can see it working well though is using the F7 view since the vehicle is always central, might even work in the F2 & F3 views also and even in the free cam view when you lock a vehicle or aircraft, that would put a smile on movie makers faces.