The bolt is pretty decent. It vapes exactly the same as any mechanical mod at 3.7V. So, personally, I'd rather buy the bolt than, say, a silver bullet or a bb. My set up is exactly the same as Phil's review with the J-tank.
Btw, the green battery that comes with it is protected. I also picked up an AW as an extra batt, but personally, I don't see that much of a difference between the AW and the generic 18500 that the bolt usually comes with, if there's any. Though AW's are said to be safer.
My 2 cents