I switched to the Dvorak keyboard layout a while ago, but English is only my third language. I’ve used the Microsoft Keyboard Layout Creator to create Dvorak-based variants of the Romanian and Russian layouts.
The layouts are:
DvorakIn— Dvorak International (has AltGr combinations for various international characters). Based on dubaron’s layout.
DvrkRoCo— Romanian (comma variant). Diacritics are typed using AltGr or the ` or ^ dead keys.
DvorakRo— Romanian (cedilla variant). Romanian diacritics should use commas instead of cedillas, however not all environments support comma diacritics correctly.
DvorakRu— Russian (phonetic). Some letters are typed using AltGr.