We sent an SL-C3100 to What Laptop magazine for a review - just been published. The review was very positive - the hardware (particularly the screen) and the software (particularly the fact it ws linux) getting plus points. Downsides of price and lack of built in networking were pointed out. Overall the device got a 7 which translates to "an extremely good machine" by their terms.
Hopefully this will help increase awareness of these cool devices! We'll post a link to it on our site in a month's time - when the magazine is off the shelves.