Completely reusable, stainless-steel, zero-waste Nespresso pods any good? Getting ready to buy an inexpensive espresso setup for at work. I've been very happy with the EC155, but I've noticed that Nespresso machines are very well engineered, very inexpensive, and much smaller.

I will not use anything that has throwaway parts, and compostability claims are bogus, but I did find these (actually) zero-waste refillable pods:


here
here
here


Does anyone have experience or educated hypotheses about how well these would work?
TL;DR:
Depends if the coffee style matches the pod design.
How a Nespresso machine works:

pod put in the machine gets pierced on the upper side
hot water is released into the pod
pressure rises inside the pod
due to high pressure a membrane burst at the bottom of the pod
brewed coffee is released

By modifying the membrane to burst at a higher or lower pressure, other flavors will be extracted from the coffee, like pour over and espresso.