ESSTAC has made a name for themselves with their hybrid Cordura/Kydex pouches. ESSTAC is known for great quality and fantastic modern shooter solutions.
GP Pouch specifically meant to hold Dual Tube / Binocular Night Vision Devices. This pouch is heavily padded for safe transport. There is additional space with an elastic loop to hold the NVG's mount.
While not designed to hold extra accessories, some bodies may allow room for more. As pictured in the second photo the Photonis Vypers leave room for a COTI.