On a shoe, it's called a "bit," not a tie bar. The originals were Gucci's claim to fame, and they used an actual horsebit. That particular shoe doesn't have a captoe, it has an unusually reserved toe seam. That shoe is square-toed and awful. I don't see the point to buying a casual shoe that you couldn't wear with khakis, either.
Cheap, casual, comfortable shoe = Bass Weejun. There is no cheaper shoe that's worth wearing (if you buy them at the outlet price of $50-$70 bucks). Only buy the leather-soled version, though. The leather and workmanship really aren't that good, but they're nicer than Bostonians, that's for sure. Cole Haan has some pretty nice loafers, too, though not much better than Bass. If you want a bit loafer, and a shoe that's a cut above those two, you might consider Dexter 1957 -- American-made, full-grain leather. I don't own a pair myself, but I've heard good things about the quality.
If your budget extends north of that, go for Allen Edmonds -- actual decent shoes.