3rd party M.2 PCIe SSD + adapter for MBP Retina A1503?

I found this adapter from Sintech
http://eshop.sintech.cn/ngff-m2-pcie-ssd-card-as-2013-2014-2015-macbook-ssd-p-1139.html
https://www.amazon.co.uk/dp/B01CWWAENG/?tag=tonymacx86-21

Which supposedly can make 3rd party disks such as the Kingston Hyper X M.2 SDD work with MacBook Pro Retina 2013/2014/2015 (A1503)
https://www.amazon.co.uk/dp/B01CWWAENG/?tag=tonymacx86-21

It sounds very promising, but I have not seen anyone writing about this.
Does it actually work?
Anyone have any experience of upgrading their PCIe SSD in Macbook Pro?

(This video is showing a similar adapter for SATA SSD for Macbook Air and mentioning this adapter for PCIe Macbook Pro)

Greetings!
I have MBA 13' 2011 i5/128gb/4gb and my ssd was becoming slower every day, at the last day of it's life it was 150mbs for writing and 120 for reading. Actually, I did exactly as it was said in video and bought samsung 850 pro m.2 and random(but the one that fits!) 10$ adapter from aliexpress. and now it is 550+ for writing and 500+ for reading, OS loads in 15 secs and it is ready to work, imho, even better than in 2011! I've already coded another backend for writing service and laptop is doing perfectly fine.
The only important thing is to be totally sure what exact adapter you need. You can easily find it with your macbook model name(my one is a1369) and save some photos of the contacts on the edge of adapter and ssd. Also I downgraded to El Capitan, and I'm not disappointed.

I have an SM951 working with this adapter on a Late 2013 Mac Pro, but the problem is the link width is showing only 2 x pcie lanes vs 4x. So speeds are not as high as they should be.

There is a very long thread on the subject here:

https://forums.macrumors.com/threads/upgrading-2013-2014-macbook-pro-ssd-to-m-2-nvme.2034976/

I have put a Samsung EVO 960 1TB SSD into my 2015 Macbook Pro (11,3)

And it is working with 4 lanes and is super fast...

Boot time is long because of some warnings during boot and also KP while booting or just after boot.

But then when it eventually does not KP any more it is stable for months!

So basically I just make it sleep and never turn off the computer.

Read and write speed are around 2500 Mbytes per second