I agree with your evaluation.Update:
Head shave with the OC
I used the GC OC this morning on my head shave. Based on the experience with the face shave, it performed about as I expected. It was a very comfortable 1 pass ATG shave. I was very impressed with the fact that there was minimal clean up to do. I have three small patches on my head that are a pain in *** to shave due to hair growth direction. Two of the three were no issue and the third was reduced to a mere nuisance. I did nick myself once but it was my fault not paying attention to how I was holding the angle on the side to top of head transition. I'll know by tonight if the shave is as close as it feels freshly shaven.
I have no idea how other guys shave their heads. This I will say about both the OC and the Jaws... If you are a one pass WTG shaver, go with the Jaws (just go slow and pay attention to you angles). If you are a one pass (or multiple passes) ATG shave, go with the OC.