I'm using this port with my Nikon D850 and sigma 15mm lens and am so far very happy with the results.
Went down to a max of 15 meters with no leakage, but the buttons stopped working after 11M.
As expected because it's said to go to only max 10 meters. No complaints here :)
I placed a order for a number of items, not expecting to receive any for some time as a couple of the products were on back order, however Aquatech part shipped without prompting, items arriving well within my expected timeframe.