Looks interesting, I have had lucid dreams, and always love to "explore" once I realise it's a lucid dream I'm having (not all that often). So, in that regard, I'm very interested and would love to try it out.
But...and for me, it's a big BUT. I believe your dreams are your minds way of processing, clearing out and making sense of things - like a "housekeeping" for your mind. So, what happens if you interfere with that housekeeping? Might there be downsides?
I'm sure/would hope they've done research on this (both short and long-term), so I'd have to look into this before I ever tried it out. Because I can imagine that it's quite addictive if this actually does allow you to lucid dream - and it'd then be hard to give up, even if it was damaging in its use.