Suenaka-ha Tetsugaku-ho Aikido does shime-waza.
I believe that Aikido is all in the heart and mind of the Aikidoka. It goes to the discussion of Katsujinken, Satsujinto- Aikido can be used as the Sword to give Life and protect the weak (Katsujinken) as it was meant to, by O-sensei, or it can be used to break someone's back by provoking a fight and than giving them an iriminage on some nice pavement, and using it to hurt the weak (Satsujinto). However, I also believe that Aikido is harder to make work while holding the Satsujinto, than say, karate. The times I have gone to Aikido with stray thoughts on my mind, I become angry and try to use strength, making my technique suffer. This, I believe, is why O-sensei taught Aikido in the way he did. As long as the Aikidoka remembers that Aikido is about The Loving protection of All Things, we shouldn't be too worried...
Sorry for rambling,