Enough D to Make a Living?

[Paul via Digitalmars-d]

I'm in between engineering jobs and exploring the idea of getting 
into programming for a living...specifically D.
1) Is there enough D demand for someone to make a living (bread 
and water :} ) at it?
2) I've programmed industrial automation controllers using 
graphical and text-based languages and wrote a few small command 
line tools in D for myself. How long would it take to become 
"employable"?
3) Is there much value in taking programming classes that don't 
deal with D?
4) What is the best way to find D programming jobs online?

Thanks for your time.