Well, first things first, it's a 635nm. The reason you don't see wings is because the whole thing saturated by webcam's sensor, so it just looks like a big round dot. When I was viewing it in real life, it looked like a line, like normal.
I don't own a lathe, but I took the course and have access to the student machine shop here at ASU.
And, what you were saying - typically, it's an etiquette thing. If someone else has sold a laser of that variety (besides really common ones like guidesmen and C6s), typically it's respect that keeps others from selling lasers in the same host. Of course, you can, it's just frowned upon. If someone approaches you and asks you to do that build in private, it's all fine and dandy, but it's just an etiquette thing as I said; it's encroaching on other people's public reputation.