Yeah I get what you're saying on all counts.
I do what you describe there right now, and generally the S1H is the A-cam, mainly due to the S5 ii's lack of OLPF and moiré issues in interviews.
I'll take the S5 ii around for cutaways and so on as it's way lighter and you can do touchscreen focus pulls.
The hope is that an S1H ii would add the AF, with some improvements, and hopefully not add any bugs LOL