My take on things...
Spare-air:
- It´s just too small...with an RMV of 0,5 (IMO, not consercative enough for the situation when you´ll need to use it) it´ll last for 6 minutes (at the surface)
- It´s to expensive...I can get a 40cft decobottle for the same price (used)...minimalism is all very well but, IMO, value-for-money comes into the equation as well and a 40cft deco will work for other kinds of dives than the really shallow reefdives you´re talking about (something that isn´t found here anyway)
Diving without a BC:
What works, works...if you say going without works for you, I see no reason to question that...
Would I dive without one? -No, but thats my decision for the kind of diving I do...to each´s own...
Swimming:
If diving without a BC, no question, knowing how to swim and swim well is a good idea...to say that the BC´s primary purpose is to keep poor swimmers afloat, if considering the "average diver", seems inaccurate...
"Should" divers be good swimmers? IMO, yes.
Do they need to be? Perhaps not
Do I think any agency really requires divers to be good swimmers? Not from the prereqs I´ve seen (and I have seen GUE´s)
Minimalist:
Minimalist can mean many things to many people.
For you it simply means "as little as possible" (or that´s my perception of your view anyway).
For me (and maybe others) it means "as little as is needed" where need is continually redefined to fit the factors impacting that particular dive.
One of these factors (again for me) is safety. Considering safety means not only considering what you need if everything in the dive goes right but what you need when it does not.
I thought I´d read it in a link somewhere but I "only" found it in a post when I looked today, maybe
One Bright Gator(its his post) will comment...anyways here´s the post (which has become the way I think about the hogarthian system)
pretty much the only guidelines being take only what you need, and if you need it, bring two. It only covers gear configuration with one broad ideal which can be interpreted many different ways.