FireFlybob....when in IMC how do you fly visually? You don't so you're raw data for both aviating and navigating.
Here's my logic.
Manually flying is easy when its clear skies as you have a horizon etc. When I fly a raw data approach now, my scan continuously switches between inside and outside the flight deck. A raw data approach in IMC is harder then in VMC purely due to the lack of visual cues.