Thing is, you can't really consider our guys "specialist bowlers" - when you've got Craig, Sodhi and Vettori all averaging twenty plus in first class, all of whom having shown their stuff at international level. I don't think you're "missing" anything by not having Anderson in the line up - I'll give dollars to dimes that he won't outscore the guys enough to justify him as "a batsman who can bowl some overs" - i.e if you had Wagner, Craig, Vettori, Sodhi, Boult, Southee - its not unlikely that they'd contribute 100-150 runs between them as the tail.
But I was talking more about the "Throw caution to the win and chase victory the best way we can" - we won't win a test match because of Anderson, not in his current form. I hope he proves me wrong but the likelihood is small, however if we have a bowling attack that gives us six threatening options that we can alternate, when four of those bowlers can also hold a bat pretty well and the other two are handy sloggers, it's not as hair brained as "Well, we'll jettison the guy with better batting returns and keep the guy who's bits and pieces"