Most of the really skinny jeans are soft and stretchy so I would imagine them to be pretty comfortable for skating. But in a different way than chinos.
I can't handle the tights look, but my pants legs have been slowly getting slimmer in the last couple of years.
In praise of chinos, these are the most comfortable and awesome pants I own:

Dunderdon P13. They look pretty slim in the picture but it's a fairly basic casual workwear cut, just a little slimmer than Dickies. The material is similar as well, cotton/poly blend, but softer.