I've always admired Panerai with its oversized case and straps but never pulled the trigger on one. I guess this is as close I will ever get to one with an 41.5 Aqua Terra.
These are around $15 shipped and probably my favorite strap at the moment as I have other straps in leather and rubber. Not bad for genuine distressed leather.
Please do share pictures of other variations that you have, would like to see one in black.