I have the Shimano sandals and they are pretty comfy. They are kind of dorky looking I admit but good for what they are.
The sole is quite stiff and there is sort of a bend in the sole so that when you are clipped in your foot is in a good position. I wouldn't really want to do a whole lot of hiking in them.
You might want to see if you can find a pair to test try on to see if you will like 'em.
Oh, I have also hear reports from people who have gone extremely long distances in them that the sandals sometimes make their feet numb.
At $75 dollars they are kinda spendy but nothing compared to a new SIDI shoe.
Later