I'm surprised somebody responded seriously, I thought the sarcasm in my post was pretty evident.
Couple of things here: A PuG leader recruiting from the LFG tool cannot see your spec unless they armoried you. For 99.9% of PuGs, this never happens. Assuming you meet whatever arbitrary ilvl requirement the leader set for the PuG, you'll be invited on those merits instead of the class/spec you're playing. For most of PuGs, people only seem to care about your gear not your class/spec.