Luckily I don't brew too many styles that need unique or specialized yeast strains. If I was depending on their recommendations for very strict styles I could see making a wrong choice.
As far as T-58 goes, I find it strange that a lot of people seem to use but there is not more information on what styles it is best for. Since I am a Belgian style novice I don't really know although it seems good for wits but I could be wrong there...
Maybe it's similar to their newer Abbaye in that they are hoping to cover a lot of styles but not really do any particularly well?
S. cerevisiae, you around?