I use AMR too, but I have been using the main Mastery strat. I figure if Death Strike works, even if you miss, then the only real reason to up your hit is for Scent of Blood. Which isn't a bad reason... but it didn't compel me enough to use it.
Right now AMR has a lot of emphasis on stamina though, which I'm still not 100% sure I agree on. There is heated debate about it on their forums... it is nice to see 700k+ when buffed though lol.