I guess I misunderstood the original question. I thought BH meant that the shield only would be tilted in the other direction with all other elements to remain essentially the same. (After a more careful reading, I believe that I was remiss in that interpretation.) But for the sake of argument, and my own illumination, consider this:

Questions of ownership not withstanding, it is quite proper to lean the shield in any direction since that is not really part of the standard charge, is it? In fact, I had understood that the leaning shield was something of a modern asthetic emandation depending on the artist's rendering, and that older representations usually had the shield standing straight up. Although I cannot for the life of me remember seeing a shield tilt to the right.

I would like to hear from the more knowledgeable folks about that.