So a co-worker ran this app on itunes by me today: http://go-bim.iankeough.com/wordpress/
Seems a little fussy - the file published from Revit must be placed in a public location that can be accessed by the app. For me i just use the public folder in my .me account.
I'll follow up with some screen shots and videos after I get the bugs worked out.
If you try it out, let me know how it goes and any tips/tricks you discover.
here's the link to it on itunes: goBIM