I've been running Schwalbe Marathons on my main commuting bicycle for a while. They seem to last pretty much forever, but I decided to try something new and put on a pair of Soma Shikoros yesterday. Not an enormous difference, but they are nice tires, and also a tad wider than the Schwalbes. But there's no generator strip, so, although it's supposed to be a stout casing, I'm concerned that my bottle dynamo will wear through the sidewalls in time. What do you all think? If anyone has experience with these specific tires with a bottle dynamo, that would be especially helpful.