I use Bragdon all the time, and love it. One thing I was told was to try it wet, I did, didn't like the results at all.
Easy to use. Easy to overuse. Go lightly until you get the hang of it.
One of the TH&B box cars is yet to be weathered, or as my dearly beloved likes to say "aged". Makes my box cars sound like a good hunk of cheese.
As for the other one, no idea.