ESTWING’S WARRANTY IS NOT A LIFETIME WARRANTY, HOWEVER, ESTWING FULLY WARRANTS ITS ALL- STEEL HAMMERS AGAINST FAILURE IN NORMAL USE, BUT DOES NOT WARRANT ITS TOOLS AGAINST MISUSE, ABUSE, OR WEARING OUT. This is our warranty policy. If you feel your tool will fall under our policy you may take it back to the place you purchased it for them to inspect it.
It depends on how thick the wood is. But yes, it can cut small branches.
I don't know for sure, but my guess is no. There are no bolts/screws in the plastic/rubber handle indicating bolting to a full tang, and the way it feels in hand would indicate no as well.
It's rubberized, so I find it pretty comfortable.
The edge comes sharpened, and uncoated. The saw side comes coated, and is pretty worthless out of the box. If you wanted to use the saw, you'd have to sand/file off the coating and then sharpen.
It works surprisingly well on large roots in the dirt