HI, answers below

What is the overall width of the bike?
-> The panniers are 870cm that's about the same as the handlebar width with the weights. I have Rentahl Dakar high bars

Did shipping from the states cause any problems?
-> No problem to ship , they use USPS arrived in a week. They can ship anywhere in the world.

Why do you think you may have to move them lower?
-> No specific reason, its only that you want them as low as possible to lower the weight. The holes are drilled from a template. If you order them and mention its for a Tenere they can either drill them 20mm higher (so the case is lower ) or not drill them. Then you can drill them to suit you. I will leave them as they are it's not going to make a big difference.

Do you think the overall weight is a lot more than Aluminium panniers?
-> Its about the same or a little less.

As for strength, they are yest to be tested in a crash ( hopefully never) but I have looked carefully at Metal Mule and the standard Yamaha system. I think it's stronger than the Yamaha system and as strong as Metal Mule.

In a big incident an Aluminum pannier will twist or buckle. As these cases will not break it is intended for it to come away from the frame at the lock.

So if you are unlucky and have a big incident at least all your stuff is still in a case so you can somehow strap that to your bike and get home.

Something has to give but I suspect its going to take a big incident ..