First post, woo.
I had a pair of P12 Jib's (great bindings, took a lot to move away from the turntable) on my Hellbents and ripped the heel out of one after about 50 days skiing. I don't ski particularly hard either. On closer inspection it appeared that the heelpiece had been slightly pulling away for quite some time, water got in the core and now the skis are pretty much decorative. The guys at the shop suggested that the very small screw footprint of the heelpiece (it is tiny) combined with the width of the ski was just too much for it. I can see the logic behind this.
I chucked some Jesters on them and they lasted about 3 days before pulling out, the core seemingly has turned to mashed potato around that area.
Just my experience with fat skis and skinny bindings. YMMV.