Crocs question (regarding fursuit feet)

Hey guys, I know several people use Crocs for fursuit feet so I'm hoping someone has some advice. I really like using Crocs, but two of my commissioners have mentioned their feet are a little large. I made sure to get their foot measurements and I used Crocs' size chart, so I did theoretically order the "correct" size. Crocs are definitely a bit roomy, so it's possible some people interpret that as too large. 

Anyhow, I'm not sure if I should start sizing down or not. When I've made feet for myself I use the same size chart and I find the fit perfect, so I hesitate to just start ordering smaller for everyone. 

Any thoughts?