Roger Sadowsky has discussed his preference for Brazilian rosewood over other rosewoods, but besides that he mostly works with the usual, traditional bass-making woods (ash, alder, maple, various common rosewoods). He has commented in interviews that the tops on his basses (which might be of a more exotic nature) are too thin to have any discernable impact on tone. I don't see how anyone could legitimately accuse Roger of hyping tonewoods.That would be true, if the main offerings from Tobias and Sadowsky weren't also the most common combinations. However, as was pointed out in the interview, they are...
If you want a beautifully figured top on it, your gonna pay, but otherwise what you're getting is the most common combination done better.
They both went out of their way to praise Leo Fender for stumbling across great wood combinations that have come to define the tone of the bass.