I've worked around this by creating a comprehensive work-space with Atelier projects for all the databases I need to search. Then I can just drop into shell and use grep/ack. Definitely not as good as Find-in-Files but good enough until Atelier 1.1 and definitely better than firing up a windows VM.
Warning - there is a large storage overhead - mostly in the Atelier/Eclipse .metadata cache especially for large codebases. However operations such as synchronizing and autocomplete perform well.