First of all I'd like to thank the developers for finally bringing VIX API to Mac OS X. That's a great wrok.
I've started a project for packing pure-C VIX API withing ObjC objects, so it can be used in Mac OS X (10.7+, 64bit) applications without cognitive overhead.
It's distributed as a framework. The homepage of the project is https://github.com/Kentzo/VIXObjC.
Everyone interested are welcome.