You are right, these files will be opened read only. BUT: There is a symbol in the menu and if you click on it a copy of the file will be created and you can edit the copy. Or you save the file.
I hope this can help you. I have tested this with AbiWord and with AbiWord you can edit the file. -- Evolution opens MicroSoft Office .doc files read only https://launchpad.net/bugs/50669 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs