I have the X-Alp Seek V, a previous version, and they feel fine all summer long. I wear mostly Smartwool PhD microlight merino wool socks; they're about 50/50 wool/spandex.

I wore the Pearl shoes all winter with two pair of thicker wool hiking socks, and strap-on shoe covers. I was warm enough, but the shoe covers suck. My shoes are 48 and no shoe cover comes large enough to fit them very well. I picked up a used pair of SiDi winter MTB shoes for next winter.

Besides that, I love the Pearl X-Alp shoes. They're way more flexible than any other shoe I've tried, which makes them great for wearing at work on days I commute.

I don't see the desire for the super stiff soles on most cycling shoes. Save the stiff soles for the high-end race shoes, and make the consumer level stuff more flexible!