Tried it again today and still had a very nice shave. I think it may be that my technique is not up to snuff with just one razor, and when I use two different feeling razors, they just do an overall great job balancing each other out.

I am thinking that I am more open with the 1/4 hollow and more closed with the full hollow.

BTW, I am using the same size for both shaves, 6/8. I can see how one would use a smaller razor for the stache, etc.