No, I don't think oxbows can approximate the affect. And most of us are not used to having our heel jammed against the stirrups as you need to do with oxbows. Oxbows are fine for 18-year-olds riding colts, but if you're over 40, or in my case, pushing 60, you need a better base for your foot and better weight distribution. Along these lines, I've quit wearing boots with leather soles. Too slick and too hard. I have a new pair of 16" Hondos with leather soles but the local cobbler put on a rubber overlay for only $20. Y'all are invited any time to stop by, ride my Charley Snell saddle and try my Crooked Stirrups. The wife would probably even make a pie and invite you in for coffee.