I just got back from the range with my new Tanfoglio EAA Polymer Witness P-S 9mm (saftey no decocker). I bought the gun as a bit of an impulse buy when I saw it for $279 NIB at a local shop.
1) The price was the major draw. I was out the door for under $300. Yes, you only get one mag and if anything goes wrong you've got EAA's legendary customer service to deal with, but for the price I was willing to take that chance. I plan on getting a .22 conversion kit for the pistol. Both the Witness P-S 9mm pistol and the .22 conversion kit are the price of CZ's conversion kits alone, when they're in stock.
2) So, the double-action is essentially a staple gun. This is not important to me as I'm not dropping the hammer or even carrying this in a holster but only shooting it from the bench at my local range. I noticed in diagrams and take-down videos that the mainspring is very short when compared to the plunger and mainspring of a CZ or exact clone. From the parts diagrams, it appears almost like a SIG P210 (except it's not modular)- which is single-action only.
I'm assuming that compressing this very short mainspring is the reason for the brutal double-action and is inherent in the design. Again no bother to me, although I'd be interested if it has the same double-action for the decocker only models. That could be rough.
3)Single action is quite decent. It felt a bit more than my CZs but had a decent break with no over-travel. Trigger is wide and grooved.
4) Fit and finish were generally quite good with one exception. The sights easy to pick up. The ergonomics are very nice. It has a very heavy recoil spring and there are no serrations except in the rear of the slide so if you're into 'tactical' press checks (not me) good luck.
3) I tested it last night with my CZ factory mags and after-market blue-follower MecGar mags (my favorite) and they all fit and locked the slide back.
4) I took it to the range today and shot about 200 rounds of assorted ammo including brass, aluminum, steel, and hollowpoints. No failures or malfunctions. I only ran the mag that came with the pistol and it had no issues. The pistol shot great and the sights were spot on. Recoil was very light (just a bit more than my SP-01 but seemingly a bit less than my 75BD.)
5) The only issue I've had is after I got home and cleaned and lubed the firearm I noticed that the slide stop seemed to wiggle. For example, if I hold the pin firmly, there is 1/8 inch travel in the lever. Thus the pin is not firmly attached to the lever. While It didn't cause me any problems, I could see how it being loose might lead to failures to lock open on an empty mag or even locking open when the mag is not empty. If it gets any worse, I suppose it might just shear off.
I'd noticed this the night before - the Tanfo slide stop appears as if it is made of two distinct components: the pin and the lever.
I wondered about how this would hold up over time. This might not be an issue - maybe I can put thousands of rounds through it no problem until it has to be replaced as all CZ 75 style slide stops have to be replaced eventually.
After all, I do have two CZ slide stops for the two pistols that I own just for that reason. But it does seem odd after only 200 rounds...
Thus my question to you guys in the forum before I call EAA on Monday:- For those of you guys who own Tanfos; do the slide stops have a tendency to wiggle like this? Is this normal break-in for this component?
- Does anyone in the forum that owns a Tanfo have a single construction (like CZs) or this dual construction slide stop?
- Has anyone who has purchased a Tanfo slide stop from EAA ($58 shipped - ouch

) noticed if they are single or dual construction?
Final Thoughts: Despite the odd slide-stop, I'm very happy with my purchase (especially for the price). In fact, if not for Tanfo's dual slide stop construction the pistol would have met and exceeded all my expectations.
I've seen these guns for sale for a lot more (over $400). At the higher price points I'd probably just save a little money and get a P-07, a P-09, or something else, but if you can find the Witness P-S for $250-300 they seem like fun range pistol for the money.