Re: ...for the jazz cats ...
Regarding feathering: I do it. And, to be honest, I think it gives me an edge over some other drummers when playing with jazz musicians. I've had musicians comment on how good my "feel" is when I'm just straight riding the cymbal. I've come to believe that the supporting feathering I'm doing on the bass drum is a big part of what they like, even if they don't explicitly state that it has to do with the feathering.
It fits in with the "more felt than heard" thing, too. You like it, even if you're not sure you can describe exactly why.
Just my 2 cents.