I think I did mention that in my post, but it only works in specific cases - the filter will not sound very good on its own. It's VSL's main big weakness, really - crossfades are not smooth in a lot of patches, probably because they valued avoiding phasing over smooth transitions. Although I haven't seen a solo instrument library where the crossfades are painless outside of Chris Hein/Sample Modeling. And a majority of the older libraries don't loop on legatos, partially why I'm looking forwards to their new Synchron libraries - all the new ones haven't neglected on looping samples. It's an uncommon opinion, but I actually think their string ensemble libraries perform the best (except for Chamber Strings I where the legatos on cello/basses are left unlooped) - smooth crossfades, looped, and transitions between dynamics are not as noticeable.