It is useless if you don't support this club, and even more useless if you don't want to 'imitate' this club. Why use or store an emblem that you don't like? I reject things that I don't like, even if they are free.
I don't support any football club other than my own football team (in real life). So, those official emblems, including those that cost a lot of tokens are useless for me. Concerning this game, for my main account, I have created another logo, and 2 more shirts using tokens last year (2015), but I never bought an official item. Once, someone sent me a shirt as gift; I removed this one also. Why? Because he obtained a lot of shirts including this shirt using a bad way, and he was giving them as gift to other users. To compare, it was like stealing and then giving what were stolen as gifts to others users as if he was doing something good. I don't like to accept things that were obtained using bad ways.
In the past, I have thrown away an original Manchester United shirt (with the name of a player and so on at the back) which was given to me as gift. I don't support such teams nor do I like to support or 'imitate' such people (famous players, celebrities and so on).