Yeah, there's actually very little stealth involved, the tents stand out and do nothing about odors by themselves. They do provide a little stealth in the form of being lightproof (if it's a good tent) but the biggest advantage is the ability to have one or more tents in a room with independent light cycles.
Disclaimer: I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.