Ah, ok.......lets get into technicalities.
All Purpose Saddles are the "dough" of the "all round, all purpose, 1 saddle for all disciplines" saddles on the market today.
But when you take a "cookie cutter" to the dough that is rolled out on the pan, and indavidualize each "all round, all purpose, 1 saddle for all disciplines" saddle, then we get into technicalities.
ALL PURPOSE VSS saddles are still A/P's, with emphasis towards jumping, cross country, fox hunting
ALL PURPOSE VSD saddles are A/P's as well, with the emphasis towards dressage, endurance racing, pleasure riding, trail riding
All Purpose Saddles are still Event saddes and Event saddles are still All Purpose Saddles.
The Stirrup Bars are still placed in a "Neutral" zone on any All Purose Saddle, because the sadde still has to be "1 saddle for all disciplines" so that the rider can still do dressage in it, regardless if it is a VSS or a VSD, or a VSSG. The stirrup bars are still placed in a spot on the saddle, that doesn't aid your position as well as a saddle built for that particular discipline would.
Seats are still deep and you are still being put into a position that would accomodate "any" of the 3 disciplines you are riding. The only difference IN SOME VSS All Purpose saddles are that they have a bit more of a forward flap, that's it, in compareson to VSD All Purpose saddles