[EricH]

Originally Posted by Jon Stratis

The only way to know the legality of a design is by reading the rules and looking at the Q&A. No one here can give you any more information than is available in those two locations - anything more than that would be opinions and interpretations. To know for sure, ask the Q&A!

On this particular question, Q&A has been rather non-common-sense.

So as a matter of opinion and interpretation, we've been giving a very "safe" interpretation that should hold water.