Well I, for one, just saw this thread...
Yes I have both, the Peanut in brass and the PCL in copper. They're a bit different than your typical "twist to activate" lights as you screw them down part of the way to activate low then continue to screw them down completely to switch to high. This leaves the head unscrewed far enough while in the off position that, for the peanut, it's almost a little too far, a little loose on the o-ring. They suggest adding a second o-ring to counteract that but, at least as of the time of my purchase, it doesn't come that way. In contrast, the PCL does come with two o-rings installed and it's quite solid.
The PCL also has a much more attractive and functional knurling design. And yes, the power of the little thing is impressive. Even though the peanut is significantly smaller than the PCL, I find myself grabbing the PCL way more often, like it much better. And a friend of mine fell in love with it and got one of his own.