This is a mod I purchased, I haven’t done any myself.
I love the SAK Compact, but didn’t use the back layer tools. I use a phillips driver much more, so I had a phillips and awl added.
It has been carried every day since arriving 10 days ago. The couple times I carried a different SAK, this one still came along just because I just didn’t want to leave it and it ended up being the one I used.