First I have heard of lockup issues with the Kershaw autos.
I did hear that some people had launches that fire so hard that the blade could hit the stop and come back, but that was one or two posts, and I know that Kershaw is selling tens of thousands of these knives, they are very popular.
Someone said "I can make it fail", assuming if you do just the right thing. I can make my Glocks misfire too if I try hard enough, but I would not call that a problem with Glocks.
Sadly, I live in Illinois where autos are illegal, so I have not purchased any of these for myself having only handled them at knife shows and friends knives, but if lockup were a prevalent issue I am sure we would be hearing about that here on this forum in great volume.
For the money, there isn't any other option out there that is made in the USA and has the great warranty that Kershaw offers.
buffalo - The lanyard hole will allow a paracord lanyard - it is an oblong hole so you can get cord through the hole more easily. The Launch 6 has a "flow through" lanyard hole that is in the backspacer.
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This guy "just doesn't dig" the knife, but did not find any flaws, just did not like the look and sent it back after fingering it and carrying it....then returned it saying telling the vendor he did not use it lol - however, he tries to get the knife to "not lock up" but has trouble getting it to do this. Remember, this is done by holding the button down improperly.
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Another look at the knife and the reviewer explains how the plunge button being pressed can cause the lock to not catch.
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6 month update on Kershaw Launch 5 - on this one the author shows how if you keep the button pressed as you open the knife it can prevent the lock from catching, which may be the problem mentioned in previous posts, but again, this is not a knife problem, it's a user problem in my opinion. You be the judge.
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[youtube]oTqB6OJ8mdM[/youtube]
Check out kershawguy.com and see if he has some - great prices and rocket fast shipping.
best
mqqn