If you're confident of your sanitation practices it should be ok.
Maybe its just me since I've been burned recently but if I ever doubt a starter anymore I won't use it. A lot cheaper, easier, and quicker to make a new starter than have a whole batch infected.
I'm sure other will chime in.
Kegged: Hoppy Amber, ESB, Weizenbock, Breakfast Stout, IPA
Fermenting: Yooper's Oktoberfest