I wouldn't say Armory works fine on OS X. In fact, it's a bit of a hassle to set up. From their website:
>WARNING: This does not work on all OSX systems. We are working hard to expand the compatibility set. If it does not work for you, most users have success from the directions on the Building Armory from Source page. It takes a little bit of effort, but it works!
I didn't have any issue with it. Unpacked the DMG, copied it to the applications folder, started bitcoind and off I went. Hated the program of course, but that's a different kettle of fish,