I have an NS core, which is the same geometry as the surge frame, and love it!
I ride my local bmx track alot, aswell as the skatepark and have no trouble, then i swap the holy rollers for some gnarlier tires and hit the downhill
I honestly cant reccomend this frame enough, although my build is mega heavy, the geometry of a frame makes the front really light and it manuals like a charm.
Im sure you could get a fairly light bike built around the surge frame though, and im pretty sure the surge is lighter than the core in the first place