Hi
In my experience there is no good way to use VSL Jazz drums in combination with Sibelius.
When using the VSL MIDI soundset it will mess up the playback of your other VSL instruments even though they appear to use the proper VSL soundset. It shouldn't, but it does.
The pitched instrument in combination with the VI Presets seemed to work for a while. Eventually the sound just disappeared without any apperant reason. It was not handy at all to use anyways.
Time for a 'VSL Jazz Drums Soundset' and a custom Sibelius instrument, I'd say.
Sincerely yours
Pieter