So, I received my unit and was super happy that such a product existed. I had been looking for something with a magnetic removable cover (like the iPad) since I got the Nintendo Switch in March 2017. Unfortunately, when I installed it there was a noticeable gap at the bottom (just a small one, not along the entire bottom) and I requested a replacement unit. The response was super-prompt and when I installed it, it fit like a glove. No defect whatsoever!!!
I highly recommend it.
Now, if in the future, the company plans to make a revision on this product, I would suggest some texture in the back of the grips and maybe a 2 game cartridge netting on the inside of the cover, so that you can bring a couple of extra games with you. Consider me a repeat buyer!!! :-)