I have been using it now for 3 weeks and it is a really good upgrade. The only issue I have is that even though it works perfectly to change gear, I have a problem in not being able to upgrade the software on my Rohloff in order to be able to do recalibrations. I have contacted Rohloff and I am waiting for them to provide me with a solution. ( I specially purchased an android phone to download the version 1 app to do the software upgrade and followed all the instructions on their website, but it refuses to authenticate my hub, despite finding it !)