Just this week Aaron and Tai-Min were passing a normal top and Bryan (a lefty) got jealous enough to practice righty RCS, but until he gets better at righty play here is our version.
Since this was just made yesterday, Bryan hasn't seen it so I think I'll not show it to him as a test to see how often and carefully he is reading this board.
It has both tips fixed, and I use a standard string (with the knot anchored at the 'extra' tip) but throw it underhand. It works quite well for the standard tricks that I can normally do. When doing Joker Chokers, I have to remember which color I'm playing so I make the proper catch. One thing I've tried and have not made work is a wirewalker on the opposite tip (normal tip wirewalker is fine). I just push the top off my hand with the string when trying to loop the upper tip. Maybe 'Zorro' can do it.