This is great news! I've asked here what the lowest temp was anyone's maintained in a WSM, and it seems the conventional wisdom is that you can't hold it that low. I wanted to make jerkey whenever I get a WSM.
I've seen suggestions of using a hot plate with a pan of chips for low temps, but it's nice to think I don't need to do that for jerkey.
(Now, getting down to 90F for cold smoking is another thing.)