No, no, no I don't think you screwed up. With a design like, on a smaller scale, it would make a pretty darn good wakizashi.

The straight Res-C might also cut down on cost as well. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" /> <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" /> <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

But the double might have some interesting virtues that I don't know of.