I will have to think on how it would be best to have two simultaneous instances running with different properties.
For those wanting multiple PMs to use: currently the config file is hardcoded to be ~/.personal_menu.rc There is a problem with having more than one (or, I should say more than three) Personal Menus running at once. As PM is a task navigator plugin, it needs to be loaded as one of the three plugins for your tablet. You could theoretically run three of them (after changing the code in several small ways for each one) but then you can't have anything else in your sidebar. Maybe there needs to be a version of Personal Menu that doesn't need to load in the sidebar? Just a command with an argument specifying which configuration to use that pops up a menu? What say you?