Thanks again everyone. It felt great to wear sandals! I do love these, and Lisa - like Lisap, I don't find the buckles a big deal at all, although I would not wear them to go shopping (or anywhere wear I would need to take them off and on).
Angie: This is a perfectly acceptable work outfit for me when I am on the road with clients, and especially when I am talking to consumers. If I am interviewing physicians, I might wear a blazer rather than a jean jacket but I would still be fine with sandals. And if I were going to a client's location, I would think about their dress code -- some would be fine with this, some would require more polish.
You are all boosting my confidence about my work outfits. Thank you for the help!