I'll take a stab at this since we make basses.
Although I have seen plenty of "laminated" necks over the years (PW has a nice one on his Bohmann!) I would not look at this as cost savings from a manufacturing standpoint. The labor to plane & join the wood would offset any cost savings. It's cheaper (to me) to grab a big piece of wood and mill it down to size. Also, I hate overcoming objections in a sales situation...and selling a $2K laminated (body) bass with something so unconventional (to the DB world) as a laminated neck as well invites speculation and cause for long-term stability issues. The violin family of instruments is VERY traditional...and for a commercial application like ours we need to blend in.
Now, if someone were commissioning an instrument and wanted a neck like what PW has on his Bohmann, that would be different....commissioned from an individual maker or ourselves. I have it in mind to make a neck with 5 or so pieces of wood of interesting aesthetics...make myself a Ken Smith Upton Bass!
