I received a pre-production Pinnacle today, and have not run it through its paces as of yet, so I will try to limit my comments to fit and finish.
Very good blade size, without too prominent a re-curve. The point is just a bit low, and combined with the top grind and handle curve gives the knife a bit of a downward pointing tip. The top grind flares out rather quickly, but should still aid in piercing an object. The blade has a very slight wobble, but is by far the solidest example of a Pinnacle that I have handled. The thumbstud is not as grabby as I like, but is placed very well for a smooth opening arc. The stud is reversible, but the knife is definitely intended for right hand use, as the locking mechanism would not be practical for one of the sinister mindset.
The edge is not shaving sharp, and even though I purchased it second hand I dont believe that it was used or sharpened. Benchmade offers its Life Sharp service, but the last few knives I purchased from them (an M2 AFCK being the next most recent) have not been sharp out of the box. I consider this a major drawback, as some people purchase even production knives with the intent of collecting and keeping them NIB, and these pristine pieces deserve to be as sharp as any every day working knife. You cant sharpen a blade and call it NIB. When I purchased my first AFCK (now in my brothers hands) it came out of the box hungry to cut. I would not want to use this knife until it has had a proper Rogering.
The handle is quite comfortable, once you take the clip off. This is not just my aversion (loathing? hate? theory that clips are part of a huge conspiracy for us all to lose more, and thus buy more, knives? all right, fear) of clips. The clip is placed for a tip down, deep pocket carry. Thus it is mounted very high on the handle, putting the rather prominent bow directly under your index finger. Not only is this uncomfortable, it prevents your fingers from indexing directly over the lock portion of the handle. One of the many advantages of the integral style of lock is that the harder you grip the handle, the tighter the lock holds in place. Thus the famous white knuckle grip often referred to regarding liner lock failure only improves the integral locks performance. The clip placement on the Pinnacle has effectively removed that feature.
But pull off the clip and the knife has a whole different grip. My fingers index well into the handle, with the thumb landing very naturally onto the ridged portion of the spine. The edges could use a little more rounding, to be picky about it, but otherwise it is a very smooth and useful shape. If the clip were mounted for tip-up carry, it might improve the grip for those that insist on using such a device.
Overall I would consider this a very sturdy and practical piece, and would recommend it to someone looking for a tough working folder, even if they thought it was a little over their price range. For cost and reliability, I believe it ranks with the REKAT Pioneer or the Axis 710, and it is a definite cut above the AFCK or any of the other BM liner locks. From there it would just be a matter of personal taste, unless you are a Spyderco Military man, in which case why are you even reading this thread?
I might not ever put the knife to hard use, as I believe that BM is going to abandon this design in favor of the Axis lock. I don't think it will be extremely collectable (I have #218 of 300 pre-productions, but with 10,000 of these floating around...) but I have started collecting CRK Sebenzas and this will make a nice comparison piece.
The popularity of the Axis and its built in ambidexterity combined with the, presumably, more difficult production process used in an integral lock knife just makes it a better business choice. In the new Benchmade catalog they offer smaller versions of the Nimravus and the 710 Axis, as well as the new Mel Pardue 720 Axis (the one I am holding out for) but only the original Pinnacle design. No left handed Pinnacle, no mini-Pinnacle, no new mono locks of any kind. If the Pinnacle is in next years catalog, it will be because they are still cluttering up the warehouse.
That is too bad, because an affordable production knife of this style is a great asset. I have noticed that CRKT has also released a batch of new knives, but as far as I could tell the S2 was still their only integral lock style knife. Perhaps the time and effort involved in this type of production is too cost prohibitive, especially with the new spring actuated locks offered by BM and REKAT. And no doubt others will follow suit with their own versions of the Axis and Rolling locks.
I suspect that the integral style of lock will remain the domain of custom knife makers and certain high-end knife companies, but not gain widespread use in the production knife industry. Having met the challenge once, however successfully, I think they will quickly abandon the concept in favor of more cost-effective methods.
But I have been wrong before.
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James