I got the carbon levered version from on-one. They're now £20. They weren't recommended for mountain biking, but i've fitted them to a 140mm forked hardtail.
its okay, the aerospace industry use ti bolts a lot. its not ideal if you're continually tightning, then un-doing as the fine threads can pull. the better quality ti bolts are have rolled, rather than cut threads.
Had a few bikes past me this year which creaked and only stopped creaking when dodgy QRs like this were replaced with something with a proper Cam Mechanism.
Light, pretty - but definitely a compromise on functionality.
