Ergonomics of a 6-position stock on Mossberg 500 series shotguns

I have a Mossberg 590 and was thinking about switching out the basic stock with something a little fancier. Mossberg's 6-position buttstock looks cool, but how does it effect your ability to operate the slide release and the thumb safety? I went with a Mossberg over a Remington solely for the fact I don't have to take change my hand position to operate these two things so if the 6-position stock takes my hand too far away it's gonna be a no-go.

Just wanted to see if anyone had one and could give some insight.