Ok, I am frustated with this thing
The main reason I'm evaluating is to let me see function call graphs (calls, called by). SI has a 'Relations window' which does this, but it has a mind of its own and doesn't always do what you want. I select a function and the relations window is supposed to track it and update, but sometimes it'll just stay stuck and flash a stupid 'working' when in fact its doing anything but !!
And the help file is not very helpful. Lookup a command and it tells you what the command does, but not where to find it and how to run it.
I did manage to find some useful info when it did work as expected. Maybe I need to learn how to use it a bit more, but I don't see myself using it consistently.