small size is great , love my a6500 for that ,, put on the small 28 f2 on it , great walk around setup if i'm trying to stay small.. and light..
that being said , its not exactly the most comfortable to hold..(same goes for the pana gx8 I owend which was about the same size)
my pinky is just there tring to find somewhere to be..
so when i'm walking around with it , no , i'm not going around saying , damn my hand is uncomfortable .. its not that bad.. but yeah with smaller cameras I find that can be an issue..that and because everything is smaller sometimes you find yourself hitting buttons you didn't mean to , with your palm or whatever.. this is more of a problem with especially small cameras.. like m4/3's ... it happened to me a lot and I know many people when new to the system complain about it to .. takes a bit to learn how to position your hand around the camera so this doesn't happen
one of the things I loved about the 5d3 was how there was a nice comfortable spot for every bit of my hand ,,
If I had it my way ... sony would make a "pro" version of apsc line .. take the insides of the a6500 put it in a body similar to the size of a gh4/5 ( which is a hair short if not the same size as my rebel t4i) and add proper heat sinks , weather sealing , durability ...
I like small , but I like light weight better , i'd say lighter weight is why I went with mirrorless.. and that's not to say every scenario with mirrorless is a lot lighter than not , just saying staying lighter is a bit easier