I used to skate I Path all the time, mostly the Cats. Anyone who says they were unskatable simply don't know what they're talking about, they skated better than half the chunky garbage at the time. Same with the Grasshopper and Matt Field Yogi's, they were all awesome to skate in.
I would buy some for nostalgia purposes, similar to how I would buy a pair of Stevie Williams' first DC pro model or some Lynx...