Paul,
If I was going to place a custom order (vs. my buying 'off the rack'), I would opt for 2 ebony laminates in the neck. My Buckeye Triple O with Purpleheart laminates is amazing, but lacks a little 'natural' bottom end, although the SF-2 in my rack can enhance that. Now that I think of it, it seems that Buckeye is used for mainly for the 'wings' of a neck-through bass, where the instruments tone is affected mostly by the neck wood; I have seen very few (if any) Buckeye topped set-neck basses, due to it's tonal limitations, I suppose.
BUT, with all that said, it's still the most exotically beautiful wood for a guitar top, and the never ending comments from others (especially non-musicians) are quite entertaining and even comical at times.......
Go for it...
Chris