They're not really summer shoes (says the enabler). Best for like 60-70 degree weather.
Puppy is potental uses proportionally per year. How many days a year you could wear divided by your other options. I have maybe 6 weeks tops of mild weather, and don't go out one day per week-so 36 Pupy (potental uses per year). But, I have 4 other (yes I know better) mild weather only shoes, like mules. 36/5 is 7.2 Puppy value
I did however see a somewhat barer heeled version, Vince I think-those could be useful....