Is it recommended for an app to use several kv Namespaces/buckets for different types of data (since

Is it recommended for an app to use several kv Namespaces/buckets for different types of data (since I'm using several different workers for different views), or just keep it all in 1 bucket, but make the key a bit longer by adding a flag to the key start?
I'm leaning towards separate, but I'd like to hear from those who tried both.