My husband used it in a programming training course that he did with a medical staff. No,he didn't use every aspect of it (not sure how well a bunch of grumpy medical staff would respond to being asked to use Class-Yes! and a scoreboard...), but he used Teach-Okay very heavily. No, he didn't require them to use the call and response, but he chunked up his presentations, and required the staff to review and teach with a partner. He was nervous about doing it, but pleased that it went as well as it did! He was completely exhilarated afterwards!
I have used it in staff meeting when we are asked to present to our colleagues about various strategies and methods that we use. Since my staff knows I'm crazy about WBT, they are used to me asking them to humor me by responding to WBT methods. My most recent presentation was on the use of rubrics when setting student work expectations. With teachers, I use ALLLLL of it, because they 'get it'. Some roll their eyes, but it seems like after every presentation, there's someone else who jumps on board with WBT.