I really wonder exactly how much use they would be in AH. As I understand it the way they worked is that the pilot had to hold the piper on the target while fiddling with a dial on the throttle that dialed in the width of the targets wingspan into the mechanical computer, from there the gunsight would move the piper to the proper aim location to fire. This required that the target remain relatively stable and not take any evasive maneuvers from my experience this sounds like the exception to most of my encounters in AH. Even in a situation in a furball where you catch your target unaware of your presence they are often engaged in some sort of maneuver to attack another plane.
During violent maneuvers, the gun site had to be locked or else it was pretty much toast.. Much like the Apollo space craft's 8 ball, it would get into a sort of gimbal lock..
It only worked well in ideal conditions.... Despite what the show Dogfights leads one to believe, it was useless in a high G engagement..
I can see it now.. Spixteen pile-it is stick stirring and forgets to cage the site..lol
We totally don't need any kind of lead-computing gunsight.. If flying a Spixteen or some other trainer isn't easy enough for you, IL2 has lead computing gunsights, arcade style flight dynamics capability and some guys set up online gameplay servers that allow their use.. It doesn't get any easier than that.. Or, download some of the offline missions and use it in there, or in the TA..