Very impressed.  I was actually concerned about the amount of cushion in these extremely light shoes - I am a supinator, so typically require more cushioned shoes.  I was pleasantly surprised when I comfortably wore these a multiple full day excursions over the last month.  Incredibly light weight and breezy cool.  Since water simply passes through these, I would not consider wearing with socks, but suitable for what I consider SoCal formal.  The gray is perfect for that.  If you expect you step into the smallest of puddles, expect your feet to get wet, but they dry quickly and not uncomfortable during the drying time.

Due to the softness and the large vents in the sole, I do encounter some times when I need to stop to extract a stone picked up by the underside.  Once wedged in there, you may need a tool (I used a key) to remove it.  My greatest concern was if I was walking through diamonds then followed it with a walk over a glass floored observation bridge.  If you expect to encounter these conditions, you may ask the diamond lab to provide tyvek shoe covers - otherwise, you'll probably be okay.

Fit and comfort
An interesting observation regarding the width: I have an average width foot (D) and my brother has difficulty find shoes to accommodate his extra wide foot- yet, he was surprised how comfortable my shoe was.  I wear a 9.5 in both dress and athletic shoes and that same size was perfect for my Zhuanglin shoes.

I was a little nervous about potential binding of the light neoprene at the top of the shoes.  I have had sand socks and river shoes that gripped too tightly and were uncomfortable after sustained wear.  This was not an issue here.  Again, the fit and comfort were just right for street/beach wear (you would probably select alternate footwear for Class II+ whitewater)

I have shown these off to relatives and coworkers and I expect to see them wearing them soon.  You can't go wrong with the price.