As
@wotan1 noted the case that comes with the Z800 is quite nice. I have carried Z800 with Z9 attached many times with my 2 piece Zemlin hood reversed and the Zemlin snap on lens cap in place. I like the 2 piece hood since if the wind starts howling I can eliminate almost all of the "sail" effect by taking the front part off (I take my belt off and thread it through the front half and have it behind me).
I recently got a custom made padded, versatile and sturdy Vertex Photo bag from measurements I took for John Stanford the owner and craftsman. It is specifically designed for Z800 and Z9 to use with the hood deployed in shooting position. It can be strapped into my suv passenger seat in an upright position with fast accessibility from top, front or side. Or if I have a passenger it can be strapped down flat on the back seat. It has plenty of external storage pockets for my BR strap, extra batteries etc..
I communicated via e mail and phone with John and he custom made and amazing bag just for me and he followed up a couple of times to make sure all was okay after I got it.
Products to help photographers with camera support bean bags for camera lens. Used for wildlife, nature, safari and bird photography where a window mount camera support is required. Unique "Molar" bean bags and custom designed lens bag enable you to get the most from your&nbs
www.vertexphoto.com