Personally, I can glance over the normal IF/ELSEIF/ELSE scripts quickly and easily, but I've been using them for 5 years. It has been 15+ since I've messed with C++, so it's much easier for me to quickly glance at the current setup than to look over your switches.
I'm not saying it shouldn't be added, but keep in mind that this isn't C++. It's mIRC. It isn't programming. It's scripting. It isn't compiled. It's run.
