This thing was a nice surprise, as I didn't order it for its intended purposes but still found some use for it that helped me to better understand its limitations. I won't knock this thing for those "limitations" at all, though, as I realize those limitations aren't as likely to be reached if you're using this thing appropriately.

What makes this thing so versatile is how the camera portion articulates, making it easier to coax the camera around various bends. Obviously, since you're still ultimately somewhat at the mercy of the path you're following, you really do need a wall of sorts to ensure you can continue going in the direction you want to go if you're going any way other than straight. It's kind of hard to explain.

The limitations I stumbled across was when I tried putting this behind something with a clear path to the other side but wanted to veer off to one side and continue in that other direction, as the snake portion of this scope wanted to continue straight past the bend due to the lack of something to keep it from going straight. I'm sure more practice and patience would've gotten me further, though.

That said, I think this thing's really cool, and I think a lot of people will find it really useful. Highly recommended as long as you've got the use for it.