I use a grenade launcher in certain situations, and I'm endlessly amused by the people who create arbitrary "rules" that restrict their gameplay, and that they expect everyone else to follow as well.
I'll sometimes use a grenade launcher in TD on Quarry, and almost always use it (at least some of the time) on Invasion and Skid Row. If I had an extra class or two, I'd probably still have a "Tube+Danger close" class running, because it works.
I'm really not sure why the noob tube has been universally singled out as being "cheap", haha.
I don't see how it's any less arbitrary than whining about thermals on wasteland, or shotguns on Junkyard, or any other perk, attachement, or weapon that works well in certain situations.
It's been my experience that constantly spamming your noob tube is a good way to end up negative. I use it when the situation calls for it, but when I go in with the intention of finishing some noob tube related challenge, I usually end up getting raped.
But I guess we all have our pet peeves. I get far more irritated with the "Marathon+Akimbo Shotgun" guys than with the noob tubers.
Founding member of the Leave-Me-Alone-atarian party of Canada.