Another plus 1 for the Silky saw. I haven't used mine yet on trails because my trails are well taken care of because they are also heavily used by hikers and nature walkers and they just do a fantastic job but there is a gravel trail near me that sometimes needs help and I also got it for firewood and just because it is cool. On the gravel bike it lives in a small fork pannier. If I carried it mountain biking I would probably have it either in a zippered pocket or if I carried a hydration backpack in there but I also have a frame bag for my HT so I would probably carry it in that.