Just finished building this. Seiko NH36 movement (day/date removed, serviced, regulated). Diver case with screw down crown, Sapphire crystal, 24HR bezel, solid caseback.
If I still like the look of it in a weeks time I'll stick an NH34 (GMT) in it. Now to find a decent strap or bracelet.
Yep I try to keep it as sterile as possible. Just using design cues that echo watch styles that I like.