Matt, Ebony is a pig to work with, West African Ebony is the worst, Macassar isn't as uniformly black but is a tiny bit easier. They're brittle, tear out as soon as you look at them, hard on your tools, and you have to be really careful that the dust doesn't get into the grain of whatever other paler wood you're using.
African Blackwood might be a better alternative, it still needs wiping with Acetone or Meths before gluing, and it's still not an easy wood to work with, but it's noticeably easier than the other two. Also I get the sense that the quality of African Ebony that's available today has gone right down in recent years, so you may well find that African Blackwood is actually blacker than the Ebony you can source.
By the way, ebonising a tight grained wood like cherry or pear with a couple of applications of aniline dye gives something remarkably close to the very best ebony of old at a fraction of the price, and both those woods are a dream to work with!
Good luck