These look great; excellent job so far!
Was the HEV on the 1665 a mod or did the case come with the fully functioning valve?
Any closer shots of the HEV?
I occasionally reapply the lube to my rep bracelets but I have never been swimming with then so I can't comment on that.
Considering that I give the bracelet a good bath with soap and water after I apply the lube, I would have to guess it is OK for a few laps around the pool.