I used to tour decades ago in LL Bean's Ranger Oxfords, a moccasin-style upper on a soft rubber sole with a steel shank. Toeclips and straps which I pulled tight. The straps gripped those shoes very well. Between that and the steel shank, the end result was impressively close to full retention. (I was racing with full cleats also; I knew well what full retention was.)
Those shoes were great. I wish they'd come back or if they are still made, I knew who made them (it was not LL Bean) and where to get them. For my feet, great all day walking shoes and very rideable. Also my favofite 'round town fix gear shoes. I used to ride Seattle's N 65th St on a 44-17 wearing them.
Now, I want the older version with smooth soles. The last Range Oxfords I saw in the Bean catalogue had a lugged Vibram sole which would be miserable with toeclips and a fix gear, though those shoes were so good I'd consider getting lugged and having the local cobbler replace them with smooth. ($$$)
Ben