I'm just curious, how exactly are you closing your lockbacks? E.g. for the mini Persian I mentioned earlier:
1) From sabre grip, pull thumb back and move index finger forward to hole (thumb moves around 2")
2) Press lockbar down, start closing blade with index finger
3) Slide thumb onto bolster, move rest of fingers out of the way and push blade the rest of the way in
Note that in step 3 (or pic 5), the knife is held between thumb and index finger, this sounds funny but actually works quite well and is rather secure for a closing operation. In the above pictures, I moved my fingers away much earlier than I usually would, usually the blade makes about a 60 degree angle with the handle before my fingers move.
The closest framelock I had was my XM-18, so I just used that for comparison:
1) Turn handle 180 degrees by (in my case) pushing thumb against spine, move index finger onto spine
2) Move thumb to lock, disengage it and push blade part-way closed
3) Move thumb out of the way and push the blade the rest of the way with index finger
Not sure what hand acrobatics are required for the lockback, especially since the framelock requires rotating the knife's handle. And as I said before, it's quicker to close the lockback. Not by much, but still quicker and easier for me.