I am not a fan of cases that only provide corner protection, but it depends on what you are looking for. It does protect the back from scratches, and some corner drop protection. It is OK for a very minimalist case
Using this Spigen case now. First one I've found that seems to offer decent protection without a lot of bulk. I tried a Terrapin tpu case but it seemed really light duty.
Huawei – Spigen Inc
This is an awesome case, I use it on an iPhone 7.I went ahead and ordered the the Honor 8 Spigen case from Amazon.
https://www.amazon.com/Spigen-Rugged-Resilient-Absorption-Huawei/dp/B01LXTROW1/ref=sr_1_4?s=wireless&ie=UTF8&qid=1481006445&sr=1-4&keywords=Honor+8+case
If you want to get a really premium case for the Honor 8, Hand & Hide has just released one. I had one of these for my old Nexus. Really finely made leather case.
https://www.handandhide.com/products/huawei-honor-8-leather-wallet-case
...in any other colors?