I have to say that when I was an undergrad, the Kappas on my campus worked with us when it came to using canes. So to say that Kappas would not teach SGRho or any other group how to work a cane...is way too general of a statement to make. We appreciated their help and I know they did not mind showing us a few cane steps. They knew we were not trying to claim it as our own, but it was taught to us that SGRho's were the first sorority to really start using canes, in honor of Kappa. My chapter was founded in "87", and my sorors were using canes then, so it is not just an "Indiana Love Thang", And I as well have seen alot of groups use canes or the smaller sticks (sorry...I do not know the proper name). But I have also heard that Sigmas were the first to step with canes as well. So...I guess you could go back and forth on that issue forever. (I do have to give props to those who can step with the canes, because it is not easy!
But I can also understand if the Kappas feel as if no-one should use the canes, because it does seems as if we all have borrowed moves, steps, ideas from other orgs., to the point where you have no idea who really started what.