The process is a bit cumbersome because I have to add a category for the micro-posts and in the WP-app this means going into two different screens. I will see if I will continue using that way. But from my understanding everything should become far more easier when micro.blog gets released 😀
Update: I am now using the iOS-apps Drafts and Workflow to post to Twitter and WordPress. It is less error prone than the plug-in way.