From a sales standpoint, I sell a lot more large Sebenzs than small ones. (Unless we're talking about the wood inlays. The small ones sell better than the large, in that category.)
I have also noticed that the folks who buy the small one first usually purchase a large one later. Not always, but more frequently than not.
On the other hand, most of the users who start with the large model tend to stay with that size. Some go ahead and buy the small one later but they almost always keep the large one too. Those who start with the small one tend to sell it or trade it in to buy the large.
Like I said, that doesn't go for everybody, and it may be different in other parts of the country, but it seems to be the trend with my customers and folks out here.
My personal preference is for the large size. It rides on my belt in a horizontal carry ballistic pouch. (Some day, a G2..sigh.) As with Jon's, the clip is removed.
As far as the lock is concerned, I wouldn't worry about that. As long as the blade lockup is tight, you're fine. If it gets loose, then it needs adjustment. In other words, if it isn't broke, don't fix it.
My large Sebenza is over three years old and has seen some hard use and, yes, even some abuse. The lock has never needed adjustment and it doesn't appear that it will need it in the near future.
I wouldn't worry about it. That is a large chunk of titanium, precision fitted to a larger piece of properly hardened BG42 steel. I doubt that it would wear out in your lifetime.
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Dennis Wright
Wright Knife & Sporting Goods
La Mesa, CA
1-800-400-1980
wrightknife@ixpres.com
("Have a knife day!")