I couldn't listen to that guy on the video for more than a couple of minutes, but the spokeshave you need for neck carving is
this one, with the 10mm (3/8") sole radius, which means you can shave all the way around a heel (nominal 2" shaft/heel radius). It's a pretty small tool, and takes a bit of getting used to, (including how to sharpen the small blade), but it's a fabulous tool for carving around heels and the neck/head transition. The fact that it's high angle (I've never used it with the blade reversed) means it will smooth a lot of cranky wood that other shaves can't.
For carving the main neck shaft, most decent spokeshaves will work. I like the Veritas one, called their low angle shave, because that can be set up as a high angle shave, too, which is how I use it.
The neck on this guitar is curly Queensland maple with a brushbox "collar' (it's a tilt neck) and that little spoke shave will handle all the reversing grain and harder/softer wood transitions very well. The only other thing that will do that is sand paper (Qld maple end grain doesn't take to scraping too well).
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