I got the Dirt shin guards and the weather was good enough to try them out (and cover them in dirt :P):

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They are comfortable and I can leave them on for the whole ride and forget about them. They have a hard cover in the front, and an optional hard cover for the calves (which I didn't use). They are shorter than usual shin-guards, which is nice because I am so short. Still, they are on the bulkier side I guess and may be hot in summer, but offer great protection.

They come with a Velcro sewed to the top which is meant to attach them to the knee guards, but I didn't like it and cut it off.

I got the Sinner knee guards too and like them, even if I have to overlap knee and shin guards because of my short legs