Hi,
Since LASS is a Kontakt product it is possible to load patches in an instrument bank (in one channel yes). So program change is at stake here. It has some nice features, but be aware of the fact that really many samples are more or less out of tune. Especially in the attack part of the smaller divisi. Furthermore many staccato and spiccato patches suffer from a strange added fifth (a result of rough bow playing I guess). It makes it rather unusable in many situations.
The forum on Audiobro is only open for registered users, which means that you cannot get an impression of "what is going on" before buying. Something completely different here at VSL, I must say.
If you want my opinion I think that the quality of the VSL products and the variety in articulations is just unsurpassed. Nevertheless, every string library has its own qualities, just like in the real world, speaking of differences between top orchestras all over the world. Maybe in specific situations it is nice to have the choice yourself at home/studio.
Finally I think (I do remember a previous discussion here on this forum about LASS) that this is not the place to discuss the program features of other products, imho. Again, unfortunately Audiobro itself doesn't offer a forum for non registered users.
Erik