For some reasons I don't like the presets delivered by VSL ("wasting" the modwheel for articulations instead using it for dynamics, for instance).
So I build all presets from scratch (VIPro and SynchronPlayer).
I try to use allways the same keyswitches for the different libraries.
A is sustain, B is legato, doesn't matter if strings woodwinds or brass.
For synchron strings I use keyswitches inside the synchron player, which are remapped to my personal keyswitches / expression maps.