I only tried them on so I can't speak to long term comfort however I thought they were really cute and very comfortable when I wore them around the store. I didn't buy them because I felt they were more casual than I was looking for and were a little high for me. It probably didn't help that it was freezing cold and raining that day and I had a hard time envisioning myself it any summer shoes at all!
HTH
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“Ginger Rogers did everything Fred Astaire did. She just did it backwards and in high heels.” Ann W. Richards
I have them in black and I love them. They're really comfy and I can wear them for hours. As for as versatility, I've only paired them with casual skirts but they would also look cute with pants, jeans and sundresses.