That's quite an impressive collection you have there, Yab; it appears you like the form and function of the Police series. I recently added one to my EDC collection (stainless scales with fully serrated blade), and my first impression is a well built, full blade EDC with excellent serrations...
My opinion, for what that's worth in the scheme of things, is that Spyderco makes perhaps the best serration designs in the industry -- aggressive yet functional under most often used situations and conditions. Just putting something called serrations on a knife edge that looks like it is useful, is not good enough. Spyderco did their homework and now produce fully serrated blades that are damn near perfect, even though their design has changed over the years and are 'knife dependent'...
Just going along 'as usual' is not a good philosophy for an industry leader. Research, improving designs, applying the changes, and then offering them to a knowledgable buying public, sets Spyderco (and a handful of others) way above the curve for quality products. Thanks Spyderco...