Hey Steve,
In my experience, all my neck-thru Alembics were more stable than bolt-on basses. Most bolt-ons I owned were a solid piece of maple with one truss rod. Alembic laminates their necks from multiple layers of wood which makes a stronger more weather resistant neck, & 2 truss rods are better than 1! Any seasonal changes due to temperature or humidity seem rather minor and only require a tweak of the truss rods a few times a year. My luthiers say the guitars are happiest stored in their cases when not played. This is the best level of protection from the elements, and creates a buffer from any quick drastic changes. Sitting in a stand would be better than hanging on the wall due to the pull of gravity I would think. I would'nt want the whole weight of the guitar to be borne by the neck / peghead flare for a long time. Oiling the fretboard is the best way to keep it healthy, but don't overdo it. Once or twice a year, or when the wood really looks dry. Your luthier can give you the best advice on this one.
Happy, healthy playing!
Kris
(Message edited by keurosix on August 06, 2008)