This may have been covered elsewhere, so my apologies if it has. I'm gearing up for a S25 purchase and/or an Aeronaut purchase, and I'm hoping that Dyneema versions will be back with the debut, because the lightweight aspect of Dyneema really appeals to me.
That said, I love the way my ballistic PU holds its shape, no matter what I stuff in there.
My concern about Dyneema is that it will have more give, and could, in theory, a) allow me to stuff too much in, thus negating the lightweight material weight advantages, and b) I could inadvertently bulge my way out of size limits, etc. I know the Dyneema won't "stand up" the way the cordura or ballistic does, but what do folks think, those of you who have Dyneema versions of the backpacks and travel bags?