Define a property to have an EMPTY range ... use owl:Nothing?

Hi Folks,

Oscar Corcho sent me an interesting idea - use owl:Nothing to represent
EMPTY, e.g., 

    <rdf:Property rdf:ID="secret">
        <rdfs:domain rdf:resource="#Document"/>
        <rdfs:range rdf:resource="&owl;Nothing"/>
    </rdf:Property>

A very interesting idea!  Are there any drawbacks to this?  Does it
achieve the desired result of requiring secret to have an EMPTY range,
e.g.,

    <Document>
        <secret/>
    </Document

/Roger