I live in a reasonably moist place, even so in summer we can sometimes get down to 2% or so humidity.
If you can engineer a humid area, think bathroom with a hot spray of water just before you hang the film up, you should have virtually dust free negatives.
I have used quite a few film dryers, even built one using plywood, silastic to seal the joints, a modified coat hanger for the hanging bit, velcroed clear plastic sheet for the door and an old German Braun hair dryer for the heat. Set the dryer onto the low heat and fan speed settings and in fifteen minutes dry film with a slight curl. I used a very small mouth/nose paper filter for filtering the air blast from the dryer.
The home built dryer worked very well, but I now rarely develop more than 8 rolls or sheets in a session, so I don't need one and didn't build it into my current darkroom, which is 22 or so years old.
I hang my own film straight in the darkroom, it is touch dry after about 30 minutes, but really dry after about 45-50 minutes at 20ºC.
I don't think a film dryer is that great an idea for most people, however if you are running through copious amounts of film, maybe.
In the commercial dip and dunk lab I worked in film dryers are a fact of life, however the air was filtered quite vigorously through an interesting 5 stage filter.
Mick.