Ben, you could look into the (lowepro??) backpacks that have a side pocket/strap for tripods. No doubt any drinks-holder type pocket will be suitable with a bit of DIY-strapping along the top for security.
I unfortunately find that if you carry a tripod you're a target, anyone who needs one of them must be carrying expensive gear. It sometimes helps to lower your aesthetic in some way - look messy or put some duct tape around your bag. Just as a precaution
As for focusing cloth, they're all pretty similar. As long as it is light and folds up small you should be ok. Considering the heat you may find a black cloth is unsuitable.
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