I'm aware of that article. Did he sound thrilled with the notion of playing them together or did he sound like he knows it's the best in house option and given their financial limitations, they may not be able to do better? It sounded like the latter to me. I didn't hear "I think they'll be a good fit together" or anything to that effect.
As for Buford, in a radio interview in the summer, he made it clear that they view both Duncan and Splitter as centers and said something to the effect of "given where Duncan is at in his career, it would be difficult to play them together". It didn't sound like they viewed Splitter as being able to consistently defend power forwards.
Even if they essentially stood pat and paired them together, Duncan would probably play 28-30 mpg and Splitter 24-28 mpg. Even with mixing and matching, that would mean plenty of minutes with Blair and Bonner paired together and that would mean no chance of finishing 5th-7th defensively.