No, Crossunder, there's no law that I know of against it. But it is possible to intercept the false GP. As an examiner, in my flying days, I have seen it done. And because of the high RoD, there's no question of using an even higher one to recover to the true GP, so the approach has to be thrown away. Undesirable from many points of view, I'm sure you'll agree.
Hence my post. I'd like to see actual examples so that I can see what the wording is, why it may be desirable, what is special about those locations. Remember the wording in GASIL is "where published" so I am assuming some sort of reassurance to cautious souls like me is included in the words. If false lobes are somehow shielded, for example, well I'd like to know that.