By the way, just because he was in the instance doesn't mean the gear he was SBing met the minimum requirements. Lots of people use to que for CT in their regular gear, then once they got in switched to SBing gear.

Using CT to SB gear use to be a huge problem when it was "the" dungeon for tome grinding. I never ended up kicking anyone for it, but I saw LOTS of people kick them. I can't say that I was against them getting kicked either, since the majority of them purposely died or got locked out of bosses in order to do the least amount of work as possible. Most of them were simply leeches looking to get carried for tomes and gil.