In my short experiences tanking, Vig is absolutely the key. If its trash who cares if the other tank is generating slightly less threat? I see it as non-issue if the other tanks are competent enuf. Even on boss fights the MT should be so far ahead on aggro it wouldn't matter. The unlimited taunt is essential IMO.
Here's how my OT trash pulls go. I usually VIG the MT, then charge in on my target, SS (taunt if I don't get aggro), TC, taunt the 2nd or 3rd mob onto me while spamming ss/rev and then SW. I also tab like a mofo, spamming dev, conc, etc. This of course gets easier as the gear gets better. On trash I'm usually stacking a lot of SBV gear for huge SS crits etc.