I have had one for a while, and agree that it is a good, albeit with practice, for portable/stealth smoke alternative. However, don't try it with friends, they will either burn the wood with the lighter or get anxious that it is not working quickly or at all....
I have found myself, in the past, before I had a vaporizer regime going on, getting frustrated and just smoking it without the top, like a pipe. Which works, but requires a screen replacement for next vapor session.
Pretty easy to load / unload actually.