As much as I like the. Kahr pistols, I wouldn't say that their slides cycle easy by hand. Although I haven't tried the T series, the smaller ones are stiffer than the K-T PF9. I haven't handled the LC9 either, so that's the best comparison I can make.
Easy cycling can be had with Glocks, and other larger pistols such as the HiPower or 1911.
I can't say that I've ever done a comparison, but I just got my Kahr out and racked the slide.
I can't imagine anyone having any trouble with it. I don't know what the Ruger is like.
In my opinion, DAO pistols are meant to be carried with one in the chamber ready to go, anyway. So for me, racking the slide isn't going to be an issue during a self defense situation.