I don’t see the need for keyswitches tbh. In every daw there’s the oppertunity to do something like that, and with individual patches you can tweak the volume of every patch more easily. NSS is a great library, great tone, great legatos, and I love that the first note has a fixed delay (same as the legato) so you can have a fixed track offset and quantize everything. Small downsides for me are the lack of staccato’s, no 2nd violins and the release tails are too short. I layer it with CSS and CSSS and love the sound together.