This is old duncon frame witch was designed only for 4x and enduro (I met designer of this frame), now it's called slope bike because it will be selling better, and I used to have one of these, and trust me, this is not slope frame.
This one is though, the geometry was changed for slopestyle riding, and I am actually helping them design the new slopestyle frame, using this one as a base. This frame was never intended for enduro. 4X, yes, but it also works great for SS.
Not quite sure why I never saw your reply, but yeah, we are adding about 30mm to the front triangle for all sizes, and lowering the BB, and shortening up the chainstays by about 50mm