Was doing to gibbing in another part of the house. After checking the wall I determined I would replace a bit and found this bastard in it! A not so fun surprise but there was an obvious gap to be patched.
(Have reported)
TBH it does look as much like the hornet's embryo nest examples as the paper wasp examples. You can always send them the photo and let the experts review it. I'm sure they would probably prefer that than not hear about a hornet nest.