Just for reference sake, here are pics I took of the Propper Mountain Stalker pattern from my uniform collection. I wear it periodically for skirmishes, especially in the fall and early spring. I am always questioned as to what pattern it is. Briefly, it was a pattern temporarily licensed by Propper for LE and Civilian use. The licensing came from the USMC (ala MARPAT) under the stipulations that Propper would change the color tones and only make a extremely limited run of uniforms. It was named "Stalker," with three environment variations: Mountain, Jungle, and Urban. They discontinued producing them shortly after they were given clearance from the USMC to use the "Digital Woodland" and "Digital Desert" patterns in their products. They were released in a BDU style 60/40 Poly/Cotton heavy twill blend.
Jungle can be best described as color toned exactly between deciduous Woodland MARPAT and lighter coniferous CADPAT. Urban closely resembles current "Digital" urban patterns with black and three gradient gray tones. Mountain is a more saturated version of base UCP colors with Clay Red and Black added.
IMO, I believe a variation of the Mountain Stalker pattern, sans Clay Red and Black, replacing with Coyote/Sherriff Brown and saturated green respectively (keeping the same coloration proportions), would work perfectly as a MultiCam alternative in the current Afghanistan supplemental uniform search being conducted.
Mountain
Jungle
Urban