"For" a double:
* ambidextrous on the opening movement.
Against a double:
* I can open my RH sebenza with my left hand easily. I start the opening with middle finger, and finish with either index on stud or thumb on blade. It's not super fast, but it isn't slow either. Or you can start it opening and then flick it open the rest of the way. I can also close it with left hand quite easily. I practice this kind of mindlessly while I talk on the phone at work...just a fidgety habit. (And I only cut myself about once a quarter practicing with some 30+ folders).
* That other stud can grab the seam of your blue jeans or khacki pants pocket and snag on the way out. An annoyance at most since I'm not an armchair commando who practices draw speed with my Sebenza.
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I have three Kit Carson folders that came with ambi studs. I removed the left-handed stud from the two that snagged my pocket (and Kit supplied a small screw to thread in to that side to fill the hole). The other was a bit lower profile and rounder and it's fine.
To each his own.
[This message has been edited by rdangerer (edited 04-27-2001).]