Perhaps I am somewhat mis stating this although I'm not sure...
The world's most popular SLR fisheye lens for underwater is the Tokina 10-17mm f/3.5-4.5, which produces (surface) images that are really not great!
The Nikon 16-35m f/4 performs much better behind a dome port than the infinitely superior (on land) Nikon 14-24mm f/2.8. Actually, the 14-24mm underwater is shockingly bad....
One of the best rectilinear wide angle lenses that I have found for Nikon FX underwater is a legacy Tokina 17mm f/3.5. It outperforms the Nikon 20mm f/1.8 and the Sigma 20mm f/1.4. Both of these lenses are infinitely superior to it on land....
Lens performance behind a dome port is unpredictable. Some great lenses work poorly and some not so great lenses work very well. Of course the same is true vice versa. The point is that it is impossible to predict a lens performance behind a dome port without trying it....
The actual issue was that you admitted deliberately misinforming at least one other Wetpixel member by telling him that that your Hugyfot housings had been supplied for free. You said that you did so "in order to wind him up."
"I told Alex Tattersall (the importer for Nauticam in the UK) that Hugyfot gave me a housing because we like to wind him up. It has become a running joke between Saeed Rashid (a close friend of his) and me."
You then went on to state that the issue was because we do not understanding irony, so I replied on 14 March 2013:
"To be frank, I am not sure who should be apologizing to who. You stating to several other community members that you received your housings for free (when this was not true) is the root cause of the issue. When the moderators called your integrity into question, it was because they believed this to be the case.
You've been around long enough to be aware of the effect that anything you say can have.
Against all that, I know that the Wetpixel community values your input. I know I certainly do. So in the interests of moving forward, I apologise on behalf of us "staff" for getting it wrong and sincerely hope that we can put it all behind us now."
Would you like another apology?
Just to keep things factually correct, I never saw an invoice. Of course, you may have sent it to one of the other admins, but it was not reported at the time within the admin team.