Let me add about counterfeits, as a Cell Phone Store, B&M are absolutely NOT immune. The vast majority of RETAIL SELLERS (especially single shops, small businesses) buy from WHOLESALERS and not directly from the factory - for a lot of reasons. So when I place an order for phone cases (as an example), I've ordered OTTERBOX cases which were sold to me as AUTHENTIC complete in packaging and everything, so I purchased them wholesale as authentic, which turned out to be counterfeit (not clones). Had I not been able to tell the difference myself (which comes from experience unless the counterfeit/clone is complete garbage), I would have unknowingly passed them off as authentic because that's what I was told. My point is, there is plenty of blame to go around for fakes. The wholesaler may have gotten it from somebody in china, like those guys on ali baba, who may have told them they were authentic, etc... I'm not defending or condemning here, just enlightening... I've been in shady vape stores that were trying to pass off COUNTERFEIT Kayfun's as authentic for $60, back when they were $99+ (or whatever)... I knew they were fake, HE KNEW THEY WERE FAKE, but he insisted they were real... Buyer beware.

(and to be fair, the vape market is no where near as saturated as the cellphone market, and I would like to think anyone opening a store would have enough knowledge to KNOW the difference but...)
BACK ON TOPIC:
I tried dual ni200 claptons in my Aromamizer, 24/32 clapton from FT (LOL), dual vertical coils, 3mm 5 wraps each on my DNA200. First fire said SHORTED, after firing it a few times I guess the wire heated up enough to register a resistance of 0.04ohms, so it finally fired... turns out I was NOT in TC mode and firing straight power mode at 150w or whatever I had it set to. In just a few puffs the amount of heat was insane. The atty and drip tip got so hot it literally burned my lips. I had to wait for the atty to cool down before I could take it apart to see what the deal was. I removed 1 coil, plugged 2 of the juice holes with cotton and ran it in SINGLE COIL mode, which registered as 0.05ohm. I blocked the opposite airhole with a little piece of napkin. Worked great, wicked fine, taste wasn't impressive but was ok. So far the build I've liked the most has been the dual Ni200 spaced horizontal coils on the two top holes of the posts so the coils were high up in the chamber. Great flavor, easy to wick... I think I used 28g Ni200 10 wraps each on 2.5mm? (I can't remember).
So my experience with CLAPTON ni200 coils so far hasn't been positive, at least not in DUAL COIL configuration. YMMV.