Please let us know what you find. I have a similar itinerary coming up. I was not able to find anything with google.
In Victoria I see there is shore diving right next to the cruise terminal. Do you know anything about it (I see you are from Victoria)?
1. Dive Rite In Scuba had a video where they said early plastic zippers had problems, but now they are good.
2. I am not sure how much it helps thermally. But it does help protect the neck seal a bit.
3. Having user replaceable silicon seals is nice. Just make sure to order the seals in advance...