BTW -- The tool does not come with blades.
There is also a cool sanding tool you can get with this.
I initially bought it for repairing a wall so I got the sander to sand the dry wall. Works great on CBGs.
So now that I have "sold" you on a plunge saw, I am experimenting with something new.
If you have $$$ and a drill press, you may want to check out the Safe-T-Planer from StewMac:
Basically, it allows you to set the depth and plane the wood. I just got mine today and so far, it works like a charm. My notches a fairly standard, 1/4" off the top. The planer should handle this with ease.
I am building a jig so I would estimate I could notch a neck in about 10 minutes or less.
BTW -- That is my biggest time consumer.
Sorry to muddy the waters. ;)
Simply make cuts to the required depth at about 1/2 - 3/4inch intervals with a tenon saw and then knock out the waste with a sharp chisel and a mallet. Easy, safe, seasonably quick and doesn't require power tools.