Infact, I mounted my Tubus Logo with these just yesterday, along with the QR attachment. Very solid.
Important note: Put inner tube around the frame before mounting any kind of P-Clip. You will get more grip, more even application of pressure from the clamp and it will protect the finish of the frame.
Tubus do a whole range of very high quality p-clip type things in a range of sizes:
http://www.tubus.com/en/spares-and-accessories
Infact, I mounted my Tubus Logo with these just yesterday, along with the QR attachment. Very solid.
Important note: Put inner tube around the frame before mounting any kind of P-Clip. You will get more grip, more even application of pressure from the clamp and it will protect the finish of the frame.