I think we may be confusing the OP here. I propose that we refer to "double-sided pedals" as pedals which have clipless bindings on both sides. "Single-sided pedals" have the clipless bindings on only one side. Thus we can refer to "combination double-sided pedals" as having clipless bindings on both sides with a platform cage for both sides as well and "combination single-sided pedals" as those pedals which have clipless bindings on one side and a cage platform with no bindings on the other.