Default [Q] Put apps on external sd card

I would like to install my larger apps (typically games) onto my 64gig sd card. I haven't been able to find anything specific for the S5 AT&T edition (ugh) but have come across a tutorial or two like this one here on XDA

After seeing this I have two questions.

1: Can the internal and external (sd card) be swapped like in the tutorial above, and if not...

2: Is there an S5 AT&T method that anyone has found to work?