Yes, I had visited Kerala recently. I was surprized to see most of the muslim women wearing "burqua" even in villages and small towns. About 30 years back we could not see even a single muslim women wearing the black veil and even in Cities like Calicut, it was difficult to find more than a handful of Burqua clad women (mostly belonging to the priestly class called "Thangal"). The condition in TN is also not much different. I had been to TN also about six months back.