Some thoughts on the Cold Steel Spike...
As a utilitarian tool, it's pitifully ineffective. I purchased mine (a standard model) on a whim several years ago at a gun show for about ten dollars, and have since put it in a small webbed nylon pouch in the bottom of my shaving kit after fully wrapping the handle with 550 lb test parachute cord. While this solved the problem of an aesthetically/ergonomically unpleasing handle, the blade still does terminate in a very short span, making its slicing performance less than impressive.
As to the ease of sharpening, I've found my Spike to be easier than most. Using only a Spyderco SharpMaker #501, it is incredibly easy to maintain a razor-sharp edge. Though not very adept at slicing, it has excelled in the two things I've used it for; yes, I know, only two.
It can cut parachute cord very well---I used it to cuts the cord for its own handle. Also, it pops blisters well. A friend of mine, the assistant crew leader for my Philmont Scout Ranch Expedition, found a blister on the bottom of his foot on the way home. Not wanting to use his Police for such an unsanitary chore (and there was no way in hell I was going to let him use my Military), I pulled the Spike from my dop kit and let him have at it. Pack a Spike and some mole skin and your feet will thank you.
In regards to a good all-around use fixed blade, I will go in the way of my fellow forumites and recommend the Mora, or Martiini. They are less expensive, worth the money, and will effectively slice your boxes and do anything else you ask them to.
God bless.