I'm not crazy about leash-based airbag setups, though they must be drastically more affordable than the things that AStars and Dainese are developing. As such, I'm not sure how much I'd be willing to pay for it, if anything, particularly if there's a substantial airflow compromise - which there seems to be.
I'd much rather have additional included or optional chest, rib, and tailbone armor. I think those are easy and relatively low cost additions that wouldn't interfere with function.
More feedback will come along once my suit arrives (tomorrow!).