I've got one on loan and have been shooting it a bit...
Very nice gun. Great user manual. Everything works as it should. The one I'm using is very accurate, and the SA trigger, while heavy, is very crisp and it feels several pounds lighter than it "feels." The DA trigger, at least for me, is just marginally acceptable -- very heavy. (According to my trigger-weight scale, its about 10+ lbs. in DA and about 5.5 lbs in SA... but SA feels about 4, or a bit less.) The gun has some HEFT to it and, as you can see, several different grips.
Another fellow in our area (NC) is also doing a long-term evaluation, and he feels the trigger just needs to "be gotten used to..." I hope he's right. He actually LIKES the heavy trigger and has no problems with the DA/SA transition. It's still a bit of a problem for me, but I've only shot a couple of boxes through it, thus far. (I don't expect it to get lighter; I expect ME to become more proficient with it.)
I think I would prefer a "safety-equipped" model rather than a decocker model, so that I could start from "cocked and locked" -- but those aren't readily available, at present. They will be.
These guns are available in several formats. They have steel or stainless steel slides, with two-part frames. The frame can be 1) steel top, steel bottom, 2) alloy top, alloy bottom, or 3) alloy top, polymer bottom, or stainless/stainless. The full-size models are coming.
Note: several folks have commented about the similarity of this gun to the CZ P-07. While they do, in fact, look a lot alike, they quite different internally -- a key point being the Sphinx's two-part frame, and it's availability in other than just polymer. I've only just seen a P-07 recently, and think it is quite a bit lighter than the SDP, too. (The SDP seems to be closer to the traditional CZ-75 design as were prior Sphinx pistols; the P-07 is quite a bit different.) Owners manuals of the two guns show exploded diagrams which display the obvious differences.
I've owned several Sphinx pistols in the past (from the 2000 series), and felt they were like CZs on steroids (or semi-custom CZs.) All of they have been accurate, beautifully fit and finished, and a bit pricey. These guns (the SDP version) will probably sell in the $1000 range, maybe a bit less.
Sphinx/Kriss says these guns are designed to made at a higher production level, and Sphinx/Kriss seem to be more seriously focused on finding a market for their guns in the U.S. than in prior years. (I know they have a number of guns out for evaluation, and they're making NO EFFORT to manage the comments of those doing the evaluations.) That takes guts and also show great confidence in their products.
