Despite some weird shipping delays, the chairs eventually all arrived.  They look great.  We are using them at a table where we wanted the focus to be on the table, not the chairs, so the low backs are great.  And they are very comfortable despite my fears about the low back.  Finally, I have to give kudos to the AllModern/Wayfair call center staff.  I had to call two or three times because the shipping and delivery information on my account on the website was wrong.  The call center staff was always pleasant and helpful.  Thank you!