Bigger Rollock ?

[PLYSWKNVS]

I'm a fan of the CRKT Rollock and often throw it in my pocket. I know the blade steel leaves a little, but I overlook it for the convenience of opening it - and, maybe it could have been a little more attractive, but I can open it with either hand and that's important to me. I have heard that they were very hard to make due to tight tolerances required, but CRKT did it. I wonder why I haven't seen similar knives from other companies. I would buy a larger version of it today if anyone knows of any. ???