Going to do a few triathlons this summer and looking for a racing flat that I can transition into without putting socks on and run 5-10k without foot problems. The other day I did a 5k tempo off a 1 hour bike ride and my saucony fastwitch 5's tore my arches up something awful. I know Zoot and Pearl Izumi make some tri specific shoes, but are there any other good, versatile flats with soft interiors that are easy to go barefoot in?