An interesting development- but the application shown and discussed thus far still doesn't match Kevlar/Cordura with joint inserts. It's more of an improvement over denim or 'draggin jeans' than a replacement for Aerostich et al. The article notes that it is "40% stronger than aramids" (i.e, Kevlar and similar) and says it is less dense than water, but doesn't provide a comparison of weight or abrasion resistance to alternative synthetics. Dyneema also has less stretch than materials like Kevlar, which may affect its suitability for some applications (for example, climbing ropes using this product won't absorb shock, and require different knot techniques).
Still, good to see people trying different solutions for an important problem.
Interestingly, Dyneema was actually invented before Kevlar...
