These are a good product for either backup water purification, or if you're a hardcore super-ultralighter. They leave more of a chlorine taste than the liquids (think drinking from a swimming pool), but this can be alleviated if you can leave the water bottle uncapped for a few hours. I like to use them at the end of the day, leave the bottles uncapped overnight, and the water tastes fine the next morning. I use them to supplement liquid chlorine, though.

I bought these mostly to use as summertime ultralight backpacking shoes in the northeast, with a lesser degree of trail running. My sumer pack weight is typically 13-20 lbs, and these shoes have provided good support under those loads. Their weight is very respectable, and they're very breathable and dry out pretty quickly, even after a total soaking. I've got them paired with Shock Doctor insoles.
The tread is good on dirt and mud, but could be a little stickier on rocks. My last shoe was the Montrail Vitesse, and they have a less aggressive tread design, but because of this, they're better on the rocks.
The only real negative I've found is the durability of the upper. After about 175 miles, the seams are starting to fray a bit, and the toe cap is starting to peel away a little bit. However, I think this is mostly due to extreme use, and probably wouldn't be an issue if you're hiking/running on relatively nice trails.
A good buy, especially for trail running. For UL backpacking, though, I'll probably go back to the Vitesse's, which seem to be a little more rugged. Good shoes, though.

This is a great piece of gear if you're willing to go the tarp/poncho route. I use it (along with a Montbell waterproof sleeping bag cover) as my only shelter here in the northeast, and it's been very effective. You'll probably want to have trekking poles to set it up as a effectively as a tarp, but if you're creative, you can go without.

As a poncho, it's even better. Great hood, good overall coverage, larger area, and lighter than a lot of other comparable products.

I wish it came with a cord to cinch around your waist, and I added a couple extra guy points (it comes with 8), but otherwise this is a great product.