xquery and xsl

Hi,

What are the impediments to using the same internal tree for both XQuery
and XSL? Do the respective processors require different types of trees?

Wouldn't it be lovely if you could do:

import module namespace xsl="http://www.w3.org/1999/XSL/Transform" at
"view.xsl";

and then use:

xsl:apply-templates(nodes [, "some-mode", ((param1=x), (param2=y))])

Similary in XSL:

<xsl:import href="controller.xq"/>

and call out to XQuery functions.

Will the two ever be able to couple or are their interfacing parts
incompatible?

best,
-Rob