i used to have a male in my tank and can vouch that they are indeed reef safe (i have a mixed reef). really is a beauty, i wish i had room for the pair, but it would probably overpower my tank. also i dont have a chiller and these fish are used to cooler waters, so they would probably do best in a tank that stays under 80 degrees (mine gets up to 82 in the summer - when he died).
FYI - There are two 9" males for sale now and also the female that measures in at 7" vs the original posting of 6".
I posted these guys on Reef Central and lowered the price a bit and adjusted to $225 for each male and $175 for the single female.