I've been to one of Wayne's lectures and seen him do this, it's a fantastic effect. I'm one of those who hope he does not release this to the open market because it's too good of an effect to be over-exposed by magicians who aren't serious about their craft.
That being said, I can certainly understand Luis and a few others that may be skeptical from not seeing a trailer or preview. There are only 2 things I wanted to add to that:
1) Previews and trailers mean very little in magic these days. We all know this by now. A lot of edits, music, and post production tricks that hide the real practicality of the effect.
2) Most importantly - Wayne has earned the reputation of releasing hard hitting, practical effects. The man puts out quality, plain and simple. Even if your style doesn't fit some of his material (for example Thread would not fit my persona), you still have to see the value in his methods, teaching, and presentation. If there is one guy who you could purchase something from without seeing a trailer and know that it will be quality, it would be WH...he's earned it.