well, if your packing ARs or more, then your probably not worried about concealing it :/ chameleon coating on pistols, and SMGs as you stated above, makes things a bit ridiculous, perception 5, INT 5, visual spec, and +3 sight enhancement. for a holdout stated above, that's negating A LOT of points. for 1 karma or 1bp. all that perception = not but a lowly 7 dice. not to mention any other modifiers. which if you wanted to, could get up to about -12 dice pool. its one of those things like emotitoys, why doesn't everyone have it?

Chameleon Coating requires 2 of your 6 mod slots. Further, the primary purpose of it tends to change depending on a weapon size. The first benefit is the -4 perception penalty to spot the weapon. The second benefit is that it's required in order to get the full perception penalty benefit from ruthenium coated clothing. If you have a weapon out that is not chameleon coated then you only grant a -2 perception penalty rather than a -4.

The larger the weapon and the more likely you're grabbing it for the 2nd benefit. The smaller the weapon and the more likely you're grabbing it for the first.

Chameleon does not prevent a pat down, nor will it provide its Dice Pool penalty to the physical search. I have been in alot of places that actually pat you down upon entry, even past the scanners. *shrug*