Nice to hear you tried it for yourself - I also found AS to be much nicer than I expected
Very Nice script, too
But… hm. "open location "x-launchbar:hide"" doesn't crash LB for me, it works as excpected.
Have you installed the newest Version of LB? I think this AS-command was only introduced somewhere around 4.3.1.
If that's the case you could try to find someone with all those programs (Adium, Growl, etc.) to try it for you. I know that must sound incredibly lame, but I don't even use Growl, let alone an IM…
Well, good luck!
Ludwig