The Kreg SML-C150-100 pocket screws 1 1/2 inch install quickly in plywood and particle board; although these are not pocket screw applications.  The course screws work well in these materials and not so well in very fine grained material.  If used in the wrong material they can split the wood.  I use them for securing jigs and rough outdoor projects.  The wide head holds very well in fences and other odd jobs.  I seldom use them for pocket holes because of the length.  They will penetrate most projects unless they are made with extra wide material such as 2x4s.