saving grace

[bouji]

Dear teachers,

When you say to someone that he/she is no good in anything by using the phrase 'no saving grace,' which of the following would be correct and more commonly used?

1. He/She has no saving grace.
2. He/She has no saving graces.

Thank you.

[bhaisahab]

Dear teachers,

When you say to someone that he/she is no good in anything by using the phrase 'no saving grace,' which of the following would be correct and more commonly used?

1. He/She has no saving grace.
2. He/She has no saving graces.

Thank you.

They would both be used. I would probably use 2.