So I bought this grip case with the carry case and I have to say the carry case is a little bit better in quality then the grip though it does have it's flaws as well. The grip case is slightly too small for my hands because of the sides of the grip not portuding out your hands sit too much on the back of the grip instead of on the grips themselves. This basically make the switch still feel as though there's no grip to begin with.
Secondly the top triggers are blocked off by the grip case making it a bit too difficult to press them without putting a bit more effort than you should into it.
The case is a solid grip and feels good in the had for a short period, but holding them grip for too long just will put a strain on your fingers.