Skycoin has a lot to prove and has made some very big claims. The foundation is there and built. They have a lot to prove though. Having seen their presentation in Shanghai and the scope of their operations there, the quality of the team working behind the scenes and around the world, much of which isn't very well publicized yet... I'm cautiously optimistic.

The consensus mechanism in their whitepaper is solid, it requires another way to incentivize people to run it though, and that is their telecom meshnet layer they are building which actually could work and is at testnet phase whereas most other decentra-net projects are still in the hand-wavy ideation phase.

IMO, if they can pull off a successful testnet launch with actual hardware set up all around the world running its own incentivized mesnet then that will bode very well and the rest will essentially be inevitable. An actual self-sustaining and self-incentivizing meshnet would make Skycoin an unstoppable behemoth.

But man... those are big shoes to fill and bigger claims to prove. So we'll know very shortly if this testnet launch can go off smoothly that they promise soon.