The Good: Light; Looks great; Strength
The Bad: Pain to put on and take off; twists easily
I had quite high expectations of this stem before buying it. It looks great and the attention to detail in the machining is superb. However, it really is ahassle to attach to the bike and to the handlebars due to its two piece design. This would not be a problem if you never need to remove the stem, although packaging the bike for going on holiday in a bike bag highlights that a normal stem is infinitely easier to remove from the bike.
The other downside to this stem is that it seems to twist on the steerer far too easily. Having tightened it to the suggested torque initially, I have since had to tighten it a substantial amount more and it still appears to twist given enough force (more so than the thomson stem I run on my other bike)
On the plus side, it is nice and light. Overall though, I would not buy this product again. Instead I would stick to thomson if I was ever to be in the market for a stem again.