Dennis,
I've seen knife making with the Tormach someplace here at cnczone. You might want to do some searches. I wish I had kept track of where I saw it.
I don't think the Tormach will have any problems with the materials you're considering. As far as feeds/speeds go...they're determined by the material you're cutting and the cutter you're using. The only speed advantage the big guys have over the Tormach is rapid traverse moves. Feeds n' speeds is feeds n' speeds. (
Flame shields now fully engaged)
I don't mean to say that the Tormach is the same as the big ones. But if I had the bucks...I'd have a half dozen Tormachs ($50K-ish) running in parallel vs one big one ($100K-ish+) running in series. That would erase the rapids advantage.