I do like the idea of a spring check valve rather than a second OEM PCV valve (position sensitive). I will look into the feasibility of the AN fittings. It can easily be done, but the cost would be higher than including hose clamps.
I'd be interested in an AL unit at a significantly lower price point. Titanium is cool and all, but sheesh......it's a catch can! It won't be visible where I plan to mount it anyway. Offer it anodized for corrosion protection in a few different colors and you'll sell them much more easily. Offer it in raw AL as well, and price it as the least expensive of the bunch.