I have one drawknife, gave the rest away. It's a Snow & Neally. I don't think they make them anymore. I use it for everything from bark to chasing a ring. I like it alot. Its blade is barely curved, almost straight, 8" cutting surface, 10" between the handles. The handles are in the same plane as the blade, but angled out slightly... perhaps 10-15 degrees.
If I was designing one, I would angle the handles out a little more, for a total of about 30 degrees.... 'out more' allows for harder pulling with less fatigue, but if you go out too far you begin to lose stability, or the ability to gauge and maintain up/down angle.