BTW, I used to wear Corcoran Jump boots with side zip when I was living in San Francisco (years and years ago), for daily commuting, running errands, etc. (Back then, the motorcycle was my only transportation, so I needed a pair of the boots, beside a pair of Alpinestars, that I can walk around, a lot. There's no way I could use moto specific boots for that duty.)
http://www.amazon.com/Corcoran-Inch-Side-Zipper-Jump/dp/B00D40090YOne thing I should mention is that the side zip boots don't offer the same level of ankle support as the lace up jump boots.
To me, they did okay (and I never crush tested them), and I knew it's a compromise anyway. ( on-bike comfort and protection for walking comfort and durability, ease of put-on, take- off .)
I didn't care about the look.