Envion and XIOS: you cant find more shit than those 2.
Why would Envion be bad in long term? Plenty of people FUD around it, and I dont really know why.
Many of the ICOs follow a pattern:
Slight price increase at the beginning (Somebody dought EVN for 2$ at Token.Store)
Then the price drops.
Afterwards, the price continues as normal.
Also, Envion has to comply with plenty of regulations, as the company is based in Switzerland.
If they are really off grid, they can save the majority of the price of the power.
If not, they are "just" miners operating on cheap power.
So I cant see why their business model cant work out.
Never heard of XIOS though.