Thanks for posting the Stroller Queen video.
It seems their products have not been picked up by any large retailers here in US, other than Woot and Amazon. (They don't direct to any retailer from their site, that I found, though they do sell through some independents) The plan to distribute through their company site is not a bad way to keep a profit with limited sales, so we'll see how it goes. It allows them to sell a product that the big box buyers won't pick up, which is always a problem in the consumer goods market! (I know, I was in the biz)
A point of correction, though: the lap shield restraint was used for years here in US, until shoulder harnesses came along. It is not a "new" feature, but rather, a rejected feature.
All told, though, it looks like a good product, although not a value proposition.... you can spend more!