Since im going to Amsterdam at the end of October im thinking of taking my longboard with me. Thought I should do a little research as Amsterdam is a city of bikes and plaster stones...but it seems to be possible to ride and i saw another video where two dudes were cruisin & dancing in Vondel Park. See here:
 

Still I dont know if its good to take it with me...i guess it will be cold haha we'll see ;)