As for fixed, I would feel little awkward with a knife on my belt while hiking, it's not usual in my country, and I really don't use it until we do longer stops. Even my phone stays in backpack, I like empty pockets.
I can count on 2 hands, maybe 1, the number of times I've seen hikers in my area wearing a fixed blade while hiking. (Hunting season is another matter.).
On trips where I want to bring a fixed blade, I either carry it in my pack's lid or in my food bag. 99% of the time I use the knife, it is for food. I'm not pushing a fixed blade on you. Just noting the carry option.
Also, I only take 1 knife. Just clean it before using it for food.
If you really like 12C27 and want a tougher knife than your Opinel 8, consider the Opinel 10. I've split kindling with a 10 and numerous occasions. No problem. Just keep the lock ring disengaged and don't push it too hard.
If you like the Rat1, just pull the trigger on that. In all honesty, we can do a lot of hiking without pushing a knife hard.