Finally jumped into the Smartthings arena after a not so pleasant experience with that hub the big orange store sells. Returned it and ordered a Smartthings hub.
Anyway, since I couldn’t find any info on the Leviton DZS15, I wanted to let everyone know that it works great with the ST hub. This is the one: http://amzn.com/B00LEWQYHG. I bought this switch the same time as the “bad” hub because the two were supposed to work together.
I wasn’t sure if the DZS15 would work with ST because I couldn’t find any information regarding the product. The Leviton website didn’t even list it. But I was able to register it on the ST hub and so far so good. It even supports instant status updates (after a hub firmware upgrade).
Hopefully this info will help anyone else searching for information on this switch.