If I hide the toolbar and exit gelide, the toolbar is visible again on restart. Unlike the filter pane, information, pane, etc., the state of the toolbar is not recorded.
I found that I CAN set the "tool_bar_visible" preference to 0 in gelidecfg.xml and this will permanently hide the toolbar. So, it looks like the functionality to permanently view/hide the toolbar exists, but the state is not being saved correctly when changed.
This is with 0.1.4.