Profile BMX pro Tyler Trueman uses the Grill Mount all the time when he's riding. Check this clip from a good session at Catty Woods.
The Grill Mount is unique in the world of mouth mounts. It's not just a mouth mount. It's a performance enhancer. Research has proven that moulded appliances (research word for moulded mouth guards) enhance your balance by 20% and your power by even more. It's also nice to have a mouth mount that helps prevent concussions. Oh yeah, and because of its rigid design, it's is the most rock solid filming platform of any mouth mount.
Check Tyler's video and start following him. You'll be glad you did