I would watch those enervates, if I were you. Channeling negative energy is an evil action.
Now here we have an interesting piece of debatable terminology.
Defenders of the Faith does indeed point out in a sidebar that "Channeling positive energy is a good act, while channeling evil energy is an evil act".
However, this is a sidebar to the section about the use of turn attempts - direct channeling, for lack of an official term - for non-turning purposes, and goes on to note that "No class can channel both types of energy."
In the PHB, however, we see that Cure Light Wounds explicitly involves channeling positive energy, and Inflict Light Wounds negative. Heal channels positive energy. Harm doesn't mention channeling - it simply "charges an opponent" with negative energy, and Enervation "releases" negative energy.
By the literal wording of the sidebar, clerics who can spontaneously cast cure spells and turn undead - who obviously
can channel positive energy - would be incapable of casting an Inflict spell, since "no class can channel both types of energy". Evil clerics would likewise be unable to cast Cure spells or Heal. This, despite the fact that none of the spells bear [Good] or [Evil] descriptors.
My contention, therefore, is that the sidebar stating that channeling positive energy to be a good act refers
only to the "direct" channeling uilised by turn attempts, and that the use of spells which involve positive or negative energy are non-aligned, unless they bear an explicit descriptor.
-Hyp.