Hello Batwings,
Namaste,
For a wonderful explaination of what is Karuna Ki, go to Vinny's terrific site, it will tell you all you can think of to ask.
I use all the symbols, together with Usui, I use what my guides tell me is needed or, if you like, whatever comes to mind for that person. Certainly they can be used together. Karuna Ki, for me, is a focusing on specifics.
Love and Light, Priestess
