My PIP is a bit of a mashup between the Maxi PIP and the pin twin. The outline is a pin tail twin, a bit stretched out for a solid step up, but includes the iconic "Torus" full length channels on the maxi PIP, and other Gary McNeill boards, along with tail channels.
My board is mostly set-up as a step up, which I've sometimes ridden more as a mid-length. With a nice pin tail, and tail channels, this board has so much hold, and so much speed in larger surf. I've felt very comfortable dropping into 6ft+ waves and getting a deep bottom turn with loads of speed onto the open face. The extra paddle power with added volume and length giving me plenty of extra time to get in early, and the refined tail providing no shortage of hold. This board loves to set a rail and get a big turn in, and loves to go fast.
As a mid-length, this board has so much paddle power, and lots of speed, which helps for small, very straight, Autumn/Winter days with gusty offshores... I can imagine the diamond tail on the original model would offer some fun pivot points to make better use of the speed and ease this board has to offer.
My go to fins for this board have been the Tyler Warren upright twins, which are a bit of a larger fin, and quite stiff, which I found better in the bigger stuff with ample power/speed available from the wave itself. In smaller waves, trying to ride it as more of a mid-length, the Rasta Twin+1 did a good job at generating speed.
I got this board in regular epoxy construction, with some art on the deck. Sadly she's been in the shop twice now for a leash/tail, and rail repair from larger surf. With expert repairs, the board still feels great and held through some pretty good waves over the big surf brought by the recent Tasman Low.