The great thing about specific knives (Strider is a great example) is that they can do many things besides cut...
They are built to be able to pry and chop very effectively, (obviously within limits)
You do give up some slicing ability, but I have never owned a Strider that wasn't a very capable cutter.
This notion that a knife is ONLY a cutting tool is a limit that is placed on it by the user. (There are also knives that are not built to handle anything more then cutting)
I agree that the right tool should be used for the right job, unfortunately, life is not so predictable, and not too many of us carry a tool bag with us when we go for a day hike, or even for a weekend camping trip..
I have gone out to my shed in the middle of winter only to find that the slide lock had frozen and I couldn't move it.
I guess I could take a mini prybar or a screwdriver with me, but I can guarantee you that I will forget it more times than not...
I could trek it back to the house, find a screwdriver, or just use the my SMF that's already in my pocket to pry it open.
(That's exactly what I do)
The thing is, it's impossible to carry all the tools you might need with you all day, everyday, everywhere.
Nobody here knows what the day may bring, and what tools you wish you had with you.....the one tool most of us carry 24/7-365 will be a knife in your pocket, so why not make that knife as versatile as possible?