I think closers in setup roles works well, because it is a similar, 1 inning shutdown role and I think set up is a less stressful situation than closing. But people can feel free to judge as they like. Closers are often the best relievers on their respective teams so I personally am up for it.
I don't like closers in MR works well though, because that often involves a lot of outings lasting longer than an inning