Aesthetically it looks great.
But I'll echo others' comments here though that if you were able to manufacture something that encased the existing folding stock, you'd expand your customer base considerably once recognizing the adapter hinge are $100+ items before moving to stocks (and that's before the fitting and other issues folks have had w/ some of the aftermarket stock adapters -- and money that might be better spent with you on other innovative VZ58 products you bring to market
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). And then w/ stocks requiring the adapters you'd be competing w/ a variety of other manufacturers too... Whether that's allen key clamps (preferred) or even drilling holes through the middle of the I beam, either would be preferable to me over doubling the cost of the stock w/ adapters and whatnot too...
So except for requiring the adapters and assuming that you'll have a few different widths of stock pads, I think this is certainly an improvement over most current options.
Or you could even design something that tied in into the receiver side of the VZ58's existing hinge. And then just supply a new hinge pin, nut, and spring w/ the rifle (since removing that nut sometimes crossthreads the threads since it's staked).