I just tried, wasted five minutes and couldn't for the life of me figure out how to move things out of the (always?) hidden group they're in by default. Eventually found the instruction for it on the issue tracker: https://github.com/jordanbaird/Ice/issues/42 While I do remember now that cmd+drag is how you reorder menu bar icons, so that is sort of intuitive for people familiar with the behavior, I haven't done that for years and definitely need a reminder. Seems very strange that the very first nontrivial action isn't documented anywhere (maybe it is but I still don't see it)...

While searching for how to move anything out of hiding, I also landed on https://github.com/jordanbaird/Ice/issues/29#issuecomment-19.... Apparently Ice can only hide one segment of the menu bar at once, so if the icons are rearranged for some reason, they can show up in a wrong section. Author promises a future update will fix this, but at the moment Bartender is still the best option unfortunately.