I understood what you were getting at.
But every screw on a Floyd is an Allen style lol.
So I wanted to be sure.
There are some that you can use the ball ends in, they just are not always that good.
Ibanez edge 2 and 3 for example allow ball ends in the trem, I used to load them like that all the time.
I had an old Peavy tracer from the 80s that had the weird back loaded string locks as well. You would load the string through the Allen key opening and string it up through the saddle.
Once it was somewhat tight you then locked it in like normal.
I don't remember the brand of bridge on it, but I don't think it was an OFR