Holster case for me mostly since I don't like putting phones in my pocket. Not into screen protectors unless it is installed before I opened the box. Luckily, four of my five phones had it already and the screens are flawless. Hate the glass back of the GN7, but oh well. That seems the only thing I dislike from it.
If it gets too slippery for me to grip or the fingerprints bother me too much, then I will get Marques Brownlee's...
https://dbrand.com/mkbhd/galaxy-s7-edge
I see Lanh Nguyen from Android Authority use a black carbon fiber skin for his S7 edge. Only $10 for it. Easy fix. Doesn't seem to get in the way of the side edges.