It fits well for small startup teams but gets messy when roadmap grows just a little. Has the freedom to define projects and tags but it works well IMO only for a single team with one or two boards only (there is no "board" definition).
There is no board or flight level views, you have to make your own filters and setup your organisation which may or may not be your best time spending idea. The swim lanes that are so interesting on the competitors (Jira, kanbanize etc) are not present here. There is only one lane per team and tickets belongs only to projects so you have to manage your organisation with a single hierarchy of tasks.
If I have to choose it will not be my first option.
