No. I will not support anything except Bukkit Permissions by default. I am working on transitioning to libperms (my own code, not available in public yet) and then you'll be able to add other backends. But not now, sorry. Also, libperms is my plugin that works the other way around, e.g. <any other permission plugin here> to Bukkit permissions, so people don't have to convert. I will not be writing backends for it except for Permissions 3, which is simple. Other people could add PermissionsEx, Permissions 2 or whatever they like using. But I still suggest everyone to convert. EDIT by Moderator: merged posts, please use the edit button instead of double posting.