For some reason I've always had a bias towards the Victorinox brand, but I'm not sure why. I've had a bunch of different model over the years, from teh little Classic to the Mechanic. They have always served me well. For several years, a SAK was all I carried.
About a year or so ago, a friend bought a lot at auction, and in it was a bunch of Wenger SAKs. He gave me one, the model I'm not sure of, but it has pliers and scissors as well as teh traditional stuff (screwdrivers and corkscrew). The main blade is fully serrated and locks open. It's quite a competent little knife and has changed my opinion of Wengers a bit for the better.
Having said that, a Cybertool 29 rides in my left front pocket with my Palm Tungsten. I'm not sure I've ever cut anything with it as tehre's always a tactical folder of some sort clipped to my right front pocket, but I use the other tools on it all the time, including the tiny pen.
Both companies now market luggage and I can tell you for sure that Victorinox makes a FAR superior laptop case.
John