Recently received socks in Canada from Viccel less than 10 days after ordering. I must say that they are much better than expected. They are among the most comfortable I have worn, especially around the upper calf. The Cotton is very fine and silky smooth. If you are looking for a fine cotton OTC dress sock in solid colours, they are hard to beat. If anyone has thought about ordering, but is still on edge, I would highly recommend ordering a pair or two to try. If you follow the link from the owner's signature you will get 20% off, and if you order 6 of the same type you get an extra 5% off on top of the SF.
My only complaints at the moment are that they do not have any patterned socks, and that there is no version which features a warmer material. The sock is great for spring through fall, but since it is made of a very fine cotton I think it will be a little cold in the winter. I have been told that a version made of thicker cotton along with various patterns are coming in the future to correct these problems.
As for durability, time will be the true test, but from my initial impression they seem to be well made, and feature reinforcements at the heel and toe.