1.3 - 1.5x is perfect, no issues with that. I find the 3.55 stretch to be pretty tedious and other 2x solutions are widely available.
Although the modern art horizontal flares have a unique look, I think I'd get tired of this, and would prefer a more conventional oval flare as well. Perhaps selling an uncoated version may be a reasonable way to recoup development costs faster.
I've spent much time looking at complex and occasionally dubious anamorphic solutions on ebay lately, and am fairly interested in a reliable, simple focus solution that doesn't involve blow torches, duct tape, and modified plumbing parts.
Hopefully this lens, or one like it, will make it to production soon.