But that still may bring up questions about listing and/or labeling.
Agreed.
Even if they have the nuts, it ain't listed, I would not approve it as an inspector. How ofter do we open those boxes while that ae hot? are they still grounded? Duh, no. How many raised boxes have we come across where the cover is loose or cocked? Is it still effectively bonded without the jumper? I use jumpers even on boxes where the yokes are in direct contact. After years of use the screws loosen up, without that jumper. Just because its code does not mean it is addiquate. If is my call, its getting a jumper.
