Using flash with SNS

[Brian]

Does SNS allow you to use multiple flashes in one of the photos of a series.
I want to put separate flash units to add spot lights, uplights and accent lights.
I've tried with photomatix and it does work. But, I would like a more natural look to the interiors.
I've tried Nik HDR efex pro 2 and it doesn't work.
Thank you for any information.
I'm new to this site and I'm from California...Hello!

[Brian]

Well I tried SNS with multiple flashes in one shot and up to 5 others without flash.
SNS did process the images and gave a fairly realistic result. But, the same shots run through
Photomatix 'fusion' gave an even more realistic result with detail in the shadows and highlights.
Unlike SNS it did not change the saturation of the final image which was towards a warm yellowish tint.

Does anyone else have similar tests they can report?
Thanks...