This worked without issue. I did not notice any discernible speed difference. The SD card is a class 10 so it does 100mb/sec transfer.

The downside that has me not moving forward permanently is that I will sometimes detach the screen to use in tablet mode and the sd card is in the keyboard. So.... no BIAB when I do that if switch tracks to sd card.

One follow up question. Is there a master list of all real tracks and styles anywhere in writing? I thought I has seen a post about this but cant seem to find it.