I'm not a small tanker, so this is moot for me, but I always appreciate nice and different work, and yours seems to be just that. Didn't particularly like the look of these at first glance, but they've grown on me quite a bit after reading these reviews and after getting used to the different-ness of them.
And as far as both comfort and function are concerned, it really seems you've filled both a practical and cosmetic demand, which is always good. The more I think them through the better I like them.
The super tight fit seems wise, if initially frustrating. Over time, things will loosen, and tight up front means longer life with better service. It's refreshing to see things engineered for the long haul.
In any case, very cool, and I wish you the best.