So far I've read around here and TPS that the Sierra is a popular selling item, and I just don't get it (mind you, I have no gripes about selling them, lol). Personally I'm with eagle, it's ugly. It's design is wierd, the black nib end is way too big and way too plastic looking, and the decorative bands on top and bottom just don't look right, just too different from each other.
However, I must say that the black Ti and platinum kits I've seen posted in the Showoff forum are nice. Get rid of the black plastic look and slop on some nice metal and it's a much needed improvement.