I have only just begun this experiment and so far I can slip these shoes on and off with ease. Pretty handy for a variety of people who have difficulties with complex tasks, like shoe-tying.
Only problem is that now my white laces are making my "white" shoes even more dingy. Yikes.
I found my elastic banding at Jo-Ann Fabrics AND they were on sale! It cost around $1.25 for both laces. I bought two elastic bands of 1 1/2 yards in length, which was a little bit too long.
I hope this idea is helpful for some of your students/clients.