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The ring flash helps me in taking pictures as the background is most of the time very dark due the need for supressing ambient light. It remains a task for perfect balance. I should really suppress the ambient otherwise I can not freeze the rapid movements. For more static shots you have not this problem. But additional reflections may indeed occur.
I have the unit right now adapted for 3D shooting with the Olympus E-PL3 camera, the 3D lumix G12.5 F12 lens with 1 mm extra spacers for closeup macro work:
Simple setup for 3D, picture C1B9489 by fotoopa, on Flickr
Simple setup for 3D, picture C1B9504 by fotoopa, on Flickr
A few examples of 3D cross-view pictures:
A swarm of mosquitoes Cross-view 3D picture P4114800 by fotoopa, on Flickr
Gehoornde Metselbij - Osmia cornuta Cross-view 3D picture P4114785 by fotoopa, on Flickr
I know that there are less 3D users. If you have a real 3D monitor there is certainly an added value for these images.