The thing to keep in mind with all of the White Labs Brett is that the vials are only something like 180k per mL if pitched directly. So to get to an appropriate amount of cells, you either need to pitch more vials or build a big starter. If you do that and get a reasonable fermentation that doesn't take long, initially the result is a very fruity, not very funky beer. If you age it for 6+ months, more funk starts to develop. But if you underpitch initially, you will get a lot more funk initially too, you might get other issues, you might not hit terminal gravity, etc.