I wear Ryka sneakers; in particular, the Versa model which is a Mary Jane style which closes w/ velcro. I love them! I just bought 2 more pairs from their website, which happened to have free shipping. They cost about $60 which is really a bargain since they enable me to walk for about a mile without the usual excruciating foot pain. The first pair I bought a year ago @ Filene's and once I knew which style suited me, I could order them online.

I own a pair of LL Bean boots which provide good traction but I don't wear them much so I cannot vouch for their PN'ability. I am terrified of walking around in snow or rain so I mostly stay home in the winter.

Good luck in your shoe quest!