Thats awesome man, stick to the KB swings and build up, I gaurantee you will se improvements.
Yeah it's pretty awesome - I'm still on course. I change up the weights once in a while, sometimes I do 2 handed with the 32kg or 1 handed with the 24kg. Someone at my gym has a Beast, I gave that a shot yesterday for 10x10 - holy mother of God that's a heavy piece of KB. I probably won't be revisiting the beast for another couple months.
It might be a little too early to say for sure, but I think I'm noticing cardio and grip improvements. I could almost swear my LSS work is feeling a lot easier....but a little too early to judge.