Yes Greenie works just fine
(STHLM is short for Stockholm where I live)
About the Solio, the thing that attracted me is that they've already considered that by offseting the carbon dioxide produced when it was manufactured.
from solio.com:
"The amount of energy used to create your Solio has been negated by removing unsustainable processes and, with the help of Future Forests, by planting trees in a protected, bio-diverse, sustainable forest. This means that your Solio is a net producer of energy from the very start."
Any if I think of how many times I'll charge my ipod and my mobile phone (you can get extra tips for mobile phones) I think its a good investment. The cost is an issue but there's always ebay.
There is also the cool factor as a lot of environmentally sound products don't always look the best and the fact that I won't need to buy or take travel chargers with me when I travel.