I just got my new D'Allara DP a week ago. It's been my EDC all week.
First, I'll discuss the pros: I think the knife is superbly built and as smooth an opener as I've seen.
I really like the ball lock idea, as it operates great (under ideal environments). I think the grip on this baby is really sweet. It's a little rough in the pocket (a tad too grippy), but I'd rather it was more grippy, than not enough. The enlarged spyder-hole was nice too. The blade is razor shard and holds its edge well for my uses. The knife is very EDC-able, and I hardly noticed in my front pocket.
Now the cons: I got the PE, but found myself wanting for the CE, partially for the asthetics. The DP blade looks kinda funny to me now... However, I also think the CE might work better for my line of work. I don't like carrying a PE at work, lest I need to cut a seatbelt, etc...
I am not completely sold on the forward cant to the blade. It might work well for rescue applications, but any knife I carry has to also work well for SD. I don't think the blade shape is ideal for SD, but I'm no expert.
I think the ball-lock is very solid and functional. However, I have not yet gotten used to it. I can't make final judgement on that right now. It does appear a tad harder to operate than I feel it should. I don't like the 360 rotatio of the ball, but understand the engineering requirements behind it.
Also, I feel the ergos are off with the clip installed. I tried both sides, and the clip just makes the knife feel "off" to me. It gets in the way more so than my old fashioned Spydie clips. I'm sure this is due to the increased 3D girth. I think "hotspots" is the correct knife lingo?
Overall, I'm glad I purchased the knife... but I'm sure it won't last as my EDC knife for too much longer. Especially once I get my Manix in the mail.
Thanks for listening to us Sal. I've been a huge fan and advocate of your quality knives for years. I'm just now expanding my collection.