To be blunt, it’s the job of your specialty running retailer to provide those data points for you. And if you aren’t getting that at the shop you stop in at, you need to change shops.
It is my duty, as a retailer, to be able to provide those answers regarding last, concept, offset, weight, width, stability range, and reasoning why you’d be feeling X, Y, or Z regarding a shoe.
The concept, overall, is providing an allegedly similar positioning to you being barefoot, with the understanding that we’ve built one hell of an unnatural world around us, and therefore providing a range of cushioning (Connect vs. Flow). There’s also the understanding that, even with better running mechanics, some of us will still require some type of stabilization from the shoe (Cadence). The Grit, IMO, is going to overlap too much with the existing Cascadia.
To your point, VFF were not developed initially with MIT gait in mind (as said study did not come until after VFF had been in market for at least 2 years).
Now, to SeasonsChange point about “squishy”–I fully concur. That being said, I don’t think this line is targeted at…well, men. The natural running movement, looking at sales percentages, has been a male-driven category. Women have been hesitant to make the switch due to the perceived lack of cushioning from shoes like the Kinvara. The Flow is going to sell, HUGE. I can see the Cadence cannibalizing some sales from, say, the Adrenaline/Omni/3030 crowd. I think the Connect will be pretty limited in appeal.