It's probably not about portage allowing it or not, because at the time you
write the package description you don't know what charset the user will have
set - only ascii characters should be used, because that is the common
denominator of all charsets.
Would something like this be appropriate?
diff -Naur original/scribus-0.8.ebuild new/scribus-0.8.ebuild
--- original/scribus-0.8.ebuild 2003-08-02 11:47:48.000000000 -0400
+++ new/scribus-0.8.ebuild 2003-08-02 11:48:07.000000000 -0400
@@ -2,7 +2,7 @@
# Distributed under the terms of the GNU General Public License v2
# $Header: /home/cvsroot/gentoo-x86/app-office/scribus/scribus-0.8.ebuild,v 1.7 2003/03/01 01:16:08 vapier Exp $
-DESCRIPTION="Layout program similar to Adobe? PageMaker, QuarkXPress, or Adobe? InDesign"
+DESCRIPTION="Layout program similar to Adobe(R) PageMaker, QuarkXPress, or Adobe(R) InDesign"
HOMEPAGE="http://web2.altmuehlnet.de/fschmid/"
SRC_URI="http://web2.altmuehlnet.de/fschmid/${P}.tar.gz"
diff -Naur original/scribus-1.0_rc1.ebuild new/scribus-1.0_rc1.ebuild
--- original/scribus-1.0_rc1.ebuild 2003-08-02 11:47:03.000000000 -0400
+++ new/scribus-1.0_rc1.ebuild 2003-08-02 11:14:50.000000000 -0400
@@ -4,7 +4,7 @@
MY_PV="1.0RC1"
MY_P="${PN}-${MY_PV}"
-DESCRIPTION="Layout program similar to Adobe? PageMaker, QuarkXPress, or Adobe? InDesign"
+DESCRIPTION="Layout program similar to Adobe(R) PageMaker, QuarkXPress, or Adobe(R) InDesign"
HOMEPAGE="http://web2.altmuehlnet.de/fschmid/"
SRC_URI="http://web2.altmuehlnet.de/fschmid/${MY_P}.tar.gz"
SLOT="0"