Late to the party here. Generally, I'm not a fan of pre-orders where you pays your monies up front and wait. It's a recipe for disaster. There are VERY few makers that I would trust doing this, but Nathan is one on that distinguished list.
I have done several pre-orders with CPK, and they went exactly as planned each and every time. The K18 delay is a fluke, and I'm sure Nathan will still deliver.
I, too, am late to this party - I meant to comment in this thread a lot earlier but I've been very busy.
I like buying my knives stress-free. This leads to me missing out on a fair number of knives because I am either not available, am too slow, or simply don't have the patience to deal with the whole FOMO thing. I have become quite ok with the fact that I will miss out on occasion but I also have developed the patience and wherewithal to acquire knives that I really want through the good connections and friendships I have built here as well as being observant of the listings.
Though I prefer pre-order/early reserves where no money is required up front, there has been nothing that has given me cause for concern with regards to CPK. Their reputation speaks for itself - amongst the highest here at BF. The simple fact that Nathan has engaged his customer base in this manner speaks volumes to his integrity and that is something that I admire greatly.
My collection of CPKs is modest (very modest) but the ones I have are some of my most prized when it comes to the tools I want with me out in the woods and mountains. There have been other models that have piqued my interest but the HDFK and FK2 certainly rank supreme. I'd like an EDC at some point but I am patient - when the right one comes along, something might happen.
The DEK1 is pretty appealing to me and this is the first time I will have gotten in on a CPK pre-order. I did so with the greatest of confidence. Nathan, Jo, and crew will deliver an exceptional knife as always - my money is safe with them. Even with the hiccups with the K18, the simple fact that Nathan has been communicative and open about the process should serve to show how that sets him apart from many in the industry.
A long post with a short point - buy CPK with great confidence, whether by pre-order, Friday sale, or otherwise.