Thank you Hans! It’s a huge leap forward for me but unfortunately it only renders properly on Firefox.
Screenshot here: http://imgur.com/9lAAoCH (1) Chrome (2) Firefox (3) Safari
Edit: I think I was maybe a bit lost for words with my last post as well. I know that multiple objects inside a group will be okay but what about a group outline made out of several shapes to produce a new shape (for instance like two circles would produce a “stereo” icon mask).