It's certainly easy enough to boot him off. 1-2 kicks should do it. Then you quit/reload to get the ring.
I rescued Lautrec in the Parish, but my research tells me that I really want his ring (the one that breaks if removed). He's currently sitting at Firelink Shrine. I'm planning a Dex build, so I don't need his armour. I gather that you can either kick him off the edge or use the Drake Sword shock wave, quit the game and go back in to grab it.
His armour aside, is there any significant disadvantage to my doing this right now? I could really use the HP & stamina boost.
Ring is good, but you start to rely on it a bit and never want to take it off because it breaks. So you're sort of stuck with only 1 ring slot. I try not to wear it now.
If you kill him early, you'll stop a particular chain of events that you may or may not want to participate in
psn quaddy456, Dark Souls tips