Macurio is good about staying out of my way. I'm liking Jenassa more and more now that i've crafted her some decent staves and a bow. She will fire at range until the distance is closed and then go to town dual-wielding a sword/staff.
Marcurio is awesome as long as he doesn't hit your melee character with his spells. He'll take out two or three archers before I can even get up the ramp to try to kill them.