I just did a few tests, and the implementation of 'ro' in Turtle doesn't seem to be view dependent. Moving the camera around doesn't produce any difference in texture bake mode. My guess was that the weighting of the samples around the hemisphere is different, since they're using reflection vector instead of normal. A…
This is very true, and the best thing to do often comes down to exactly what sort of engine/lighting setup you're using. Sure you can break some stuff down mathematically and have all the theory you like, but when it comes to practical application you just need to do what looks best. =)
Adding light color to your spec can be really helpful if you know exactly what kind of lights are all around your object keeping in mind that light, bounces off objects and that spec is reflection, it can help you color a jumble of UV pieces quickly. It's not so helpful for characters because they encounter a bunch of…