Just spent a week in Australia playing with some new toys, one courtesy of Peter Mooney and Scubapix. All items have been reviewed pretty extensively so here are my two bits.
Aqua View
Takes a little getting used to, bashed my mask a few times but it is worth it. The full frame view is fantastic. No more cutting off fins and really helps filling the frame with the subject. Installation is easy. It is heavy I was already negatively buoyant it this does not help. One minor issue is if you move the focus point around the slight tint can make it hard to see in low light situations.
StiX Floatation Arms
Stopped in to visit Peter at Scubapix and walked out with a pair of 6" (?) StiX floatation arms. My camera has always been fairly negative. With the flatport and the new Aqua View it does become a bit of a load. The arms had 3 of the larger float each. With the 8" dome, 10-17mm lens, the Aqua View and the StiX arms it is just a little negative. Without the Aqua View it probably would be neutral. Tried the 17-55, flatport and Aqua View set-up. With the arms still fairly negative. Would definitely need four 6" arms with float to get anywhere near neutral. The ball ends work well w/TLC and Ultralight arms and IMHO will probably hold up to quite a bit of abuse. Took them to +100fsw a couple of times and they seem to keep their shape and the float material looks like it will hold up over time.
10-17 Tokina
I really, really like this lens. Now it was used in mainly good viz +60ft and fairly bright conditions. The lens was quick to focus and the flexibility of the zoom made sure it was heavily used during the whole trip. As I review most shots taken behind the Aquatica 8" inch dome they look pretty sharp. At 10mm you do really need to make sure your strobes are behind the dome plate or you get a little flare.