You absolutely do not need to go outside ZC for the sitemap.
First, to disable the sidebars on the sitemap page, edit your /includes/templates/your_template/common/tpl_main_page.php.
Around line 40, find
PHP Code:
// the following IF statement can be duplicated/modified as needed to set additional flags
if (in_array($current_page_base,explode(",",'list_pages_to_skip_all_right_sideboxes_on_here,separated_by_commas,and_no_spaces')) ) {
$flag_disable_right = true;
}
Add
site_map,
and
$flag_disable_left = true;
as shown to get
PHP Code:
// the following IF statement can be duplicated/modified as needed to set additional flags
if (in_array($current_page_base,explode(",",'site_map,list_pages_to_skip_all_right_sideboxes_on_here,separated_by_commas,and_no_spaces')) ) {
$flag_disable_left = true;
$flag_disable_right = true;
}
This will give you no sideboxes on your sitemap page. (It won't hurt to leave the instruction text in the statement for a future reminder.)
Getting the map in two columns will be a bit more involved and I can't tell you how to do that offhand, but there are others who can. It will probably be related to what it will take to display wearables and supplies in two separate sidebar menus as you appear to desire.
Do you *really* want to show every single product in your catalog in your sitemap? IMO, it bloats the page and makes it harder to see the layout of your site at a glance.