The white bank spot is not really a skatepark. If you really want to hit it, I'd recommend to go there early in the morning or in the evening.
Otherwise there will be a basketball match, some beach ball, scooter kids, sometimes other skaters and a lot of lurkers around.
If you want to skate a really good spot try "Israels Plads". It has a knee-high mini bowl and good ledges. The spot is pretty new and there is plenty of space.
I will probaply skate there myself. I don't really know when, since I need to talk to my other fellows.
If you want to skate a good skatepark, try "N?rrebroparken", it has a good vibe and doesn't get too crowded.