Here's my advice: Zappos sells some of the Five Ten line. Maybe they carry the Tevas as well. Order a handful of styles and sizes. Return what doesn't fit. Shipping is free both ways, so you don't have much to lose. I ended up with the Impacts in a size larger than what I normally wear if memory serves (I can check at home tonight), but I had to go through a few models and sizes before I settled on them. I like them for mtbing and I assume I could get used to them if I had to for road riding.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher