I cared for a flock of chickens (varied breeds) at my last job, and the welsummer and I had a longstanding feud. Despite all attempts to socialize or bribe her, no matter how much time or how many treats, she did NOT like people and was always the last to be put away because while the others usually cooperated and went into the run when I started rounding them up, miss Poorwinter (yes, we're extremely original) was just as contrary as her name and would run off every which direction, screaming bloody murder and acting generally like an idiot. Her eggs were a pretty medium brown with speckles (they were no where near chocolate, not even at POL, and she was not from hatchery stock), and in summer she laid about 3-4 a week, winter she slowed to 1-2. When I was planning my home flock, I intentionally left out the welsummers. It may just have been my particular hen's personality, but she was such a frustrating bird that I didn't feel the pros outweighed the cons. She also was an aggressive forager and ripped the landscape to shreds, which is fine if you've just got pastures, but for a backyard flock she'd be a nightmare. When planning for dark, pretty eggs, I chose a golden cuckoo marans for the rich browns instead-- much better experience.