YN, I don't know where you've heard these things, but I've been hanging around here since the beginning of the Kershaw sub, a little over a year ago, and this is the first I've heard of it!
As mentioned, the Leek has a safety. I've got all of mine tightened down in the off position. It's irritating to me to go to open the blade, only to find out the safety bar has slid over to the locked position.
Here's another thing to consider. When set for tip-up carry, the Cyclone, if you keep it in the far right of your right front pocket, positions the blade is up against the pocket seam. This is true for any knife that offers tip-up carry. I personally like this position, because my index finger naturally falls on the flipper when I reach into my pocket for it. Thumb and third finger knuckle pull the knife out, and my index finger is already on the flipper.
Also, the torsion bar that activates the SpeedSafe also acts as a safety. The same energy that fires the blade is compressed when closed, keeping it in the handle until you start the blade in motion.
As for accidental firing, I've carried Leeks and Cyclones and I've never had a SpeedSafe go off in my pocket. This holds true for any of the SpeedSafe models. Another alternative is to go with a Blur, which has no flipper. Still SpeedSafe, but activated by the thumbstud. Either the Leek or the Cyclone will be a great choice, and I wouldn't be real concerned about having your pants cut up or possibly damaging the boys! Hope this helps!
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