Scolopendra heros is a very neat animal... Please note they can and will chew out of ziplock bags if not kept on ice. They'll also readily eat pinks in captivity, which is really neat as you can actually hear them devour the mouse.
Here is a pic of a large one I encountered in the Ozarks. I know of a few spots in western Arkansas where I can easily find 6-10 of these a day in the right habitat and little effort.

As far as "necking" a venomous snake, it *is* dangerous and was unnecessary in this case. However venom lab work is not the only time that I deem it appropriate. Sometimes it is less stressful and safer to do this when having to assist feed/force feed some animals. I say this as there are some techniques for force/assist feeding animals that doesn't require "necking" the animal, but often times these techniques are more stressful for the animal and over time will kill the animal. With that being said, I'll admit that a head grab on a typical elapid leaves a lot more room for error than your typical pitviper. Agkistrodon in particular are really pretty nasty to hold behind the head, and I've seen copperheads actually push fangs through their lower jaw in an attempt to bite the holder. It is something that your average herper should never have to do, and something that even when done properly runs a high risk of envenomation.
Stay safe and keep your fingers out of their mouths!
The Flying Spaghetti Monster is TRUTH