If you won`t mend your clothes....
When tailor examine clothes, tailor get message how bad tear is and how meny threads need to mend it.
There is a few message I saw.
If you keep not mending, after the `barely holdiong together` message, you will lost your cloth from your backpack, forever.
There are few people broke their clothes.
And not all tailors can mend badly tear ;)
Do use Striss to examine, if he said `not too badly worn yet`
you dont have to mend at all.