My fingers are crossed! I would prefer to use OmniGraffle, but clients require Visio output. Existing OmniGraffle export to Visio is essentially unusable. At the moment, I have only received a couple of workarounds from OmniGroup, but several other aspects of Visio export have not been addressed at all. If you want accurate Visio import and export, please keep submitting requests to the OmniGroup!
Our organization also uses a mixture of Visio and OmniGraffle.
Visio import/export is critical to me and why I originally purchased the product. Was hoping for much more functionality than what was received. Glad to see it on the cards.