V4ish. Sit-start at left side of base of dihedral, using large, low, opposing edges. Tricky start leads to fun moves heading up and slightly left. Stand-start is good, V2ish problem.
V5/6. Sit-start as per "The Outer Limits". Move up and right, through dihedral, to gain right arete. Finish up arete. Stand-start with right hand on arete is a good V2ish problem.