Hmmm, i timed myself today. Eight minutes to carve a neck to sanding stage, using a $30 spokeshave, a half round rasp, and a half round file.
If id done it with a router, id have to buy the bit ($40-70??), set up the router each time (5-10 minutes), possibly make a jig (one for each different neck length/width/shape), make or buy a router table, fit the router to the table (unless it is dedicated to that one job = more $$$). Then, rout the neck = four minutes, and THEN, get out the spokeshave (because you bought a generic round over bit, and not a $150 custom made jobbie), and finish the shaping.....
All in all, how much time is saved?? LESS TIME.
Chances of chip out using a router? LOTS
Chances of chip out using spokeshave? Very little
For the people on this forum, who are making less than five guitars at a time, it would be less cost effective, and more time consuming to use a router. And a damn site more dangerous.
Luckily, i was taugh well during my apprenticeship, and that it isnt always easier, cheaper, more accurate, or faster to use machinery or powertools.