I don't have a prob with these guys. The way I look at it, is if he can break the rules, the rules are bad not the player.
Admittedly my exposure to these is limited but I've also seen a trend that goes along with min maxing. In my experience they are also good to excellent RPers. They might actually be the total package
In the very limited amount I play, I'm sort of this. We Min Maxers tend toward spellcasters, and I havn't played a fighter in prob 10 years.
The one time it was a prob was when I was DMing 4th and the Min Maxer made all the char's, Now that was a NIGHTMARE. Level appropriate foes died in 1/2 a round. YIKES. That is when I stopped being such a "seat of the pants DM". But I learned a lot and went up a few L as DM. An unfortunate circumstance that really really stretched me as a DM. I'm truely glad for the lessons learned