I really have two complete different set-up for different kind of photography.
I'm almost the same way. I wont hesitate to use both A7r or 6D for landscapes.
I definitely favor the wide landscapes with the A7r, just to maximize potential. However, stitch jobs, I would prefer the 6D as the A7r stitch is just too painful to work with. So far for my dedicated outings for landscapes, A7r + 16-35F4IS/14 samyang and Canon 6D + 24-xxx/70-200
day to day, simply a 50 would do, if I feel adventurous, then the 24/135 might tag along.
karate matches, fast pace at the park, school play/event 6D + 70-200