I swap between a 6s and a 6s+ and I don't think either of them could replace my iPad.
I also use my iPad 100% as my personal computer replacement. It would be even harder to just use a 6s+ as my only machine as I prefer a bigger screen for some tasks.
I also use my iPad 100% as my personal computer replacement. It would be even harder to just use a 6s+ as my only machine as I prefer a bigger screen for some tasks.