I just finished hinging my U-Can-Do .46 with the new "Instaflex" C/A glue from Bob Smith Industries. The first thing I noticed was that when I flexed the surfaces for the first time after the C/A had cured was there was no "snap, crackle or pop". The surfaces flexed smoothly and were not stiff at all. The bond to the wood is excellent and I have pulled on them as hard as I can and they are there for good. The hinges flex more freely with this glue and should require less torque from the servos to move the surfaces.
To answer Mike in DC, if you take a small piece of plastic laminated with fiber and saturate it with thin C/A glue it is going to get stiff (and sometimes brittle) and its flexibility is going to suffer. This new glue seems to bond equally as well yet it stays flexible to allow the hinge to move in its full range of deflection. Its common sense, we want the hinge to bend freely and when you soak it with regular thin C/A it gets stiff and doesn't like to flex.
I am very impressed with the new Instaflex glue and will be using it on all my C/A hinges.