Here is the Wakeside ride which includes images of the Skylon Tribal tower: http://www.wakesiderides.com/rides/index.php?page=out&id=118
Both are great towers. You can only get the Titan Series III from the factory as an option or an authorized Malibu boat dealership.
Wakeside offers the Tribal tower to anyone with a 2005 or newer Malibu. Many are ordering their boats without a tower at all so that they can get the new Tribal tower from Skylon. This is their replacement for their Classic Swoop but Malibu decided not to go with it for 2005 since they are pushing the Illusion X and the Blade tower. They didn't have "room" for four different towers.
However, the Paradise Water Sports in Temecula, CA and Phoenix, AZ both offer the Tribal tower.
Here is the product link: http://www.wakeside.com/page/W/PROD/skylon_wakeboard_towers/skylon_swoop_tribal_tower