Eventually got around to finishing this project.
Trimmed off the duplicate keyring attachment, peened closed and added some traditional red scales.
Finished up as follows, 3 layers:
1. File
2. Inline Phillips, with both openers paired opposite
3. Scissors
On back; CS, awl, fine screwdriver, hook.
Not completely happy with the tension on the openers. A little light compared to a normal SAK, but I had no option otherwise together the backsprings make the Phillips too stiff. It all works OK but probably will remain a one-off.