How do I hang it on my wall hangers?
You don't need any special hangers, just add another one on the bottom.I've seen a special Steinberger-specific wall hanger add-on, but unless you're fabricating something custom, you'll need new hangers. String swing makes several different horizontal ones, and one "wall stand" vertical one. There are a handful of headless wall hangers designs.
100% agree. Literally for the last decade when I'm buying an 8 string I'll check the nut width against what is listed on the Agile site, to make sure it's something I am used to. I've had a couple of guys on reverb measure the but width of a guitar they're selling, and then I go compare it to the Agile one. And that's just nut width. Kurt gets crazy detailed with all of the specs on those. I like that so much better than "the neck is fast" or "the neck is a baseball bat" type qualifications.I love how they list all the measurement specs. More companies should do that.