I've been thinking about the purchase of a custom folder, however, I hesitate on dropping 400-500 dollars on a knife that features a lock (liner lock)that while good at the moment will weaken over time due to wear. I would like to find a custom knife that features a buttom type lock or one that wear and tear would not have adverse reactions. Any thoughts on the matter? Also, does anyboy already know of a custom maker using a "bullet proof lock.