We only had "buzzworms", albeit, several varieties of them, to worry about in the deserts of SoCal and Nevada, and they usually used their "buzzer" if you got 'em in a spot they didn't like. I have been struck, but never bitten, fortunately.
I was assembling some rigging on the end of a line truck boom, and while squatting down to adjust something, I felt something bump my hip. I looked around, but didn't see anything, so went on about my business. A while later, when I had shut down the engine on the truck, and everything was relatively quiet, I heard a hissing sound everytime I walked around to the side of the truck where I had been working on the rig. At first, I thought it was an air leak, but on investigating, I found a small Sidewinder about a foot long rooted into the dirt, right where I had been working, with his little buzzer going a thousand beats a minute. On checking myself out, I found where it had apparently struck at me, and hit my hip at the thickest part of my jeans on the back pocket, and it was small enough, that the strike didn't penetrate the cloth. That sure did get my awareness into high gear for a while, though.
Pesonally, I've relocated more of them than I have dispatched. On a jobsite out in the boonies, we were the intruders, and we usually just moved any varmints that we came across to a safe distance, and finished our work; we were usually gone in a few hours, so no harm. But in inhabited areas, the story is different, as the critters are usually fairly territorial, and conflicts between them and folks usually wind up being trouble.