Re: looking for a knife but can't find one
You might also consider 154CM steel, it's so close to D2 that heat treat variances are probably a bigger factor than the steel choice between the two. If you are concerned about rust/corrosion 154cm is the choice between the two. Little harder to sharpen than D2, and pending on heat treat D2 might hold an edge slightly longer.
As for a custom Alan Folts is very good with working with a customer as far as a collaboration/back-and-forth on what you want and what he designs/makes. He's done a couple designs I did awhile ago that turned out very well and were reasonably priced for the work. I doubt Alan would have an issue doing either steel for ya.