[Acillatem]

As a WIZ my group tactics are dependent upon the other classes in the group. If I was grouped with an ENC who preferred to charm DPS, then I would make an /assist ENC key and load up a couple of fast cast stuns (50dmg) to help the ENC re-obtain charm when it broke. Otherwise I would simply use a long casting stun once (750dmg too), snare if needed, let the pet do the bulk of the work, and depending on the XP loc, I could also pull/root mobs for chain killing.

Duoing with an ENC I would offer less DPS than a MAG, but would offer way more versatility and safety, as well as an evac option and burst DPS should the need arise. It would probably be a wash long term IMO if you were looking at overall XP flow (if the WIZ played his class right and didn't just nuke once per mob and med).