Smart seals + Kubi isn't redundant? Yes you can switch the seals yourself when they get worn, but you still have the latex in the smart seal part.
Anyway the good of the Kubi is: if the glove leaks or get damaged, you pull the wrist up to disengage your under-glove and you won't flood your suit because it get sealed; with the smartseals if the glove leaks you get flooded because the attachment is fully open.
Exactly, and that's why i don't want to mount a dry glove directly on the smart seals (as replacement to latex/silicon seal).
To me they aren't redundant (if i got it right, this is all new to me):
-smart seals allow easy change of wrist seal, and allows using any wet glove.
-kubi allows mounting a dry glove while keeping the benefit that if the glove gets a hole it's only your hand getting flooded, not whole suit.
In principle i don't see why it wouldn't work: the kubi system shouldn't care whether the wrist seal to which it's getting attached is itself glued to the suit's arm, or attached to the suit arm thanks to a smart seal.
The only concern i can imagine is that between the 2 ring systems the wrist seal could get "sucked" by pressure underwater and end up being torn. But that's just imagination, i'd like real field feedback.
On my personal usage, wet gloves should be fine in most of my dives (not that cold), however i have stringent tendons and that means whichever the wrist seal i'll get some water on the arms whenever i close my fistW
I see dry gloves as the only chance for me to be really dry
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
(conclusion reached after 6 years of drysuit diving)