I'm tempted to try the SWs. My calf is 13+.
Angie, classic-ish riding boots are a HEWI for me. Black leather (although I would do the 5050 look), knee-high, flat, almond toe. I have trouble fitting my narrow calf and I don't like a lot of bagging at the ankle.
I would wear over skinnies, under bootcuts, and with dresses.
I'm wondering if I should think about actually springing for the 5050s (knee-high, not OTK) as a birthday gift for myself this year in October, or if I would be happy with the Mixitups.