xsl-output only visible in Xopus

Hi,

In order to improve the user-experience I want to include some of the Xopus functionality inline on the page. For example, it would be nice for a list-type of element to have inline buttons to manipulate elements in the list. Yet, I want to use a single xsl file for editing in Xopus and displaying HTML. Is something like this possible?:

<xsl:template match="element">
<div>
<xsl:choose>
<xsl:when test="inXopus()">
We're in Xopus!
</xsl:when>
<xsl:otherwise>
not in Xopus
</xsl:otherwise>
</xsl:choose>
</div>
</xsl:template>

When editing in xopus, you should see: "We're in Xopus!"
When transformed with other means, you should see: "not in xopus"

Thanks in advance.