SMR was founded a over 150+ years AFTER KSR.
KSR is one of the oldest known sword schools to NOT have changed their curicculum. What was taught 500+ years ago is still being taught to those attending the shrine today.
I had to the privelege to attend (and be corrected by) a KSR seminar led by Yukihiro Sugino sensei in Montreal/Sherebrooke/Quebec City in 2006, and a smaller clinic taught by Sozen L. Kusano sensei earlier this year.
While it was amazing to be personally corrected by a living legend, Sozen Sensei's clinic was so much more informative because there wasn't an language barrier, and the class size was limited to 20.
We covered itsutsu no tachi, nanatsu no tachi and kasumi no tachi, as well as iaido and how to properly draw and resheath the sword. I mean, beyond the observe and imitate, but everything from breaking down the openings from hakama sabaki and obi sabaki, to what is said/thought during obi sabaki, to how much pressure should be exerted between the thumb and forefinger when drawing and resheathing. Truly, truly amazing to have that kind of instruction from one of the last direct disciples of Master Sugino Yoshio sensei.
For those fortunate to have the KSR DVD, but not sure who Sozen sensei is, he is the anglo-saxon student and is married to the only female student shown on the DVD.
If you're close to the Toronto area, there's a school dedicated to teaching KSR http://tokumeikan.com/home.htm
Also, the KSR DVD has minute, subtle and very intentional errors, for obvious (or maybe not so obvious) reasons.