Well, tamer will work to solo mel, travesty and grizzle. (grizzle is very long...)
Travesty will actualy eat someone using bandies. So you will have to rely on spellweave/magery for heal on pet there.
But for travesty solo, I would suggest an properly geared sampire. Probably safer for the ending.
Best duo ? For those.. I guess sampire and archer could work.. Kinda like a archer tamer combo. Just dont try to hand feed him.
Else, you could always go for two tamers. Is there sunch a thing as too many greater dragons on a peerless ?