Here's what I learned from Harry Fleishman's shop (pic is from my shop, not Harry's):
That type of building form lends itself well to this kind of storage, but seems like it could work well either way. This is shortly after I built it, so it's not full of stuff yet. The only thing I'd change is putting in twice as many shelf rails, since the sliding shelves just holding tops and backs don't need much height between them, and sometimes you need extra height for clamps when gluing up.
With this setup, I can pretty much store all the fixins for two in-progress guitars and still have a clear bench. Not great for longer pieces like unbent sides, purfling and binding... I'm thinking about attaching some cubbies just to store neck materials. Anyway, even as-is, it seems like a pretty efficient use of space.
When I finally get around to building a proper bench, I'll incorporate this type of storage, except double or triple wide. Right now I'm using a mdf 2'x4' clamped to a B&D Workmate.