I've been using WlS exclusivly since I recieved some from lancair with my kit. I tried ordering some last week and found it was on back order with no idea of when it would be available. I called WLS to see if I could get some from them and they said it would be about 3 weeks. I decided to try UV smooth prime instead just as a test since I know quite a few people use it. I have a can of smooth prime available free for anyone who cares for it you just pay for shipping. To me it's like painting with liquid chalk.   I'll wait for WLS as long as I have to. Just my opinion for what it's worth.
Joe