No, it's fun using them. You may not even get to the 3rd round
there some skills and artefacts that give you adrenaline, so you can start the combat with level 2 adrenaline (in many fights). don't worry just try them, they are fun. there is a small problem with losses, you have to have ressurection spell or you will lose some troops. they don't have a paladin-like troop. you can receive some troops after the combat, but it's different.