I got a trixie for my birthday as a tool to carry as I ride (nice to fix loose stuff, lockring, saddle, bars, etc) and here is a review of my first impressions.
Size, the trixie is a very managable size to carry about. it is about 7.5 inches long and 1.5 inches wide and .19 inches thick. The thickness impressed me the most. I initially thought that it would bend under too much stress, but is very thick. I don't have a scale to measure mass or weight, but it is a very solidly built tool. It also fits quite nicely in one of the front pouches of my Chrome bag, which is a plus.
Here i have size compare to a USA dollar, as well as thickness shown with my calipers.
tools: The 15mm box end wrench is great. A wonderful replacement for those of you carrying around PB wrenches. It is thin, long enough to give you the torque you need to tighten down the wheels and gives an _ok_ feel. Keep in mind that you will be holding the lockring part, so its not totally ergonomically good. The 5mm hex is a nice tool too. Provides ample length to torque on seatpost/saddle/headsets/bars. The 8/9/10mm box end wrenches seem a little difficult to use. My bike does not have any use for them, but I imagine using the 8mm might slide a bit and does not looks ideal for using. also these provide less torque than then 15mm due to the placement (t=f(d)) Lockring tool. Again, a great tool. Length allows for proper torquing (easly get the 40n*m required, and I'm not extremely strong) Chainwhip: I didn't have any spare lengths of chain to make one. It doesnt come with chain, you have to provide it yourself. Bottle opener: srsly, why a bottle opener. A larger hex for tightening cranks and/or a spoke wrench would be much more useful. Most stuff that is good for you has twist off anyway
pics of tools in use:
Overall, I am very pleased. As an emergency tool, it really can't be beaten. The slim design is easy to carry, thin, yet seems durable enough + the lifetime warranty. It lacks a few things that I would like (mainly a larger hex for cranks, as I've had one go loose on me before) but seems to have all of the things to rescue something gone wrong. I'd give a grade of 9/10