BHCT was the first thing that popped into my mind when reading the articulation list. The library sounds great but I'm still not convinced by this combination patches approach. That's literally the only thing that stopped me from buying BHCT, since I love the sound of it.
The pros about combination patches is that, I'm not sure how to say this but,
the samples capture the instruments resonating/affecting each other.
Something you won't get just by layering samples and using a reverb to blend them.
(its something like layering solo 4 horn patches won't sound the same as a sampled horn ensemble.)
The cons is, you're limited to that instrumentation/orchestration.