DE, very rarely these days. That being written, I've recently made the move to straights. I was trying a tricky XTG maneuver and made a shallow but long (about 1 inch) vertical slice by my jaw line. I didn't have the skin pulled as tight as I should and my attention drifted.
XTG using dominant hand on the same side can be tough and is usually done somewhat "blind". I suggest if you have not tried so already, to use opposite hand for each side XTG. IE Left hand for XTG on your right side cheek and vice versa.
Personally, I gave up on most XTG passes with the straight and went WTG then ATG with a couple of diagonals where needed on the neck.
Everyone's beard map is different.
Frank