Index: wp-admin/customize.php
===================================================================
--- wp-admin/customize.php	(revision 26986)
+++ wp-admin/customize.php	(working copy)
@@ -133,6 +133,10 @@
 					<?php if ( $wp_customize->theme()->get('Description') ): ?>
 						<div class="theme-description"><?php echo $wp_customize->theme()->display('Description'); ?></div>
 					<?php endif; ?>
+
+					<?php if ( current_user_can( 'switch_themes' ) ) : ?>
+						<p><a class="button" href="<?php echo esc_url( admin_url( 'themes.php' ) ); ?>"><?php _e( 'Switch Themes' ); ?></a></p>
+					<?php endif; ?>
 				</div>
 				<?php endif; ?>
 			</div>