Nah hell didn't freeze over...just EA screwed up AGAIN..but this time they lucked into something good.

Unfortunately I do have some bad news....this is a bug.  EA didn't intend for this to happen, and they are looking into ways to address this "bug".
From what I've heard, there is a reason that meshes never were included in sims2packs, and they still really don't want them in the packs.  Potential problems with duplicate meshes, and potentially spreading of "bad" meshes are the main reasons that meshes were not intended to be included.

Of course on the bright side..this is another example of how stupid EA is :-/