I haven't heard from many people who sport toe clips, straps, and cleats. I used to use that setup on my roadie, and it was easy to dial in exactly the desired amount of retention by tightening or not tightening the straps. Couldn't walk in 'em though. I miss my old Nike road shoes; found them at the mall for $7.99. I think the shop ordered them by accident, considering the rest of their product mix.

EDIT: I briefly looked at a handful of retailers online, and couldn't find any road shoes whose description clearly stated that an adjustable slotted cleat was included.