Is anyone familiar with the sexlink Sapphire Gem. What are the attributes, egg laying, lifespan, drawbacks, temperament? I was at a local feed store and saw some in their bins, but seems like there’s not much information about them except their beautiful grayish blue chicks originated from Czech Republic. Anyone have experience with them? I was so tempted to buy some but restrained myself when I came back few days later they were all gone.