To be honest, better a damaged pair of boots, than a wrecked ankle. Ankles are very difficult to repair. My commute is 15 km one way in built up areas. It's all the gear or no riding. Simple. After a no fault accident in 2019 that cost me my Hypermotard, a collar bone, a cracked breast bone and two ribs, it confirmed that irrespective of speed good gear limits the damage. Consider some short boots like the Alpinestars SP-1 or similar. Don't make you look like RoboCop, very comfortable even for walking some distance. Dainese, TCX and Daytona all have similar offerings. I wear my Daytonas and keep another pair of shoes in the office. Simple.