Being a believer in the keep it simple stupid mode of tying, and fishing for that matter, these types of patterns are some of the most effective out there when fished properly. This style lends itself to both topwater patterns, and to subsurface patterns. In fact, one of the things I like so much about the RS2 is that it can be fished deep, and at times in the surface film as a small BWO or midge emerger. A friend, Bill Silvia, ties essentially the same pattern you see Tim Flagler tie here but with a tuft of pearlescent ice dub for the wing bud, and does very well on the South Branch and other rivers with this simple pattern.
Tie some up and sharpen your hooks!