no it doesn't cancel the invisibility, fyi.
side note... i happened to be looking at a build discussion thread, and 5 pages in, someone mentions...
"why hasn't anybody suggest guerrilla ranger?"
I thought that a great idea... and playtesting proves it. once you get your sneaking to 5 (so it only takes 1ap to sneak), you can usually get two ranged sneak attacks per turn, for an investment of relatively few points, since there is sneak on a lot of items, plus void essence. really only need to invest about 3 skill points, take the guerilla trait, and voila, stealth archer.
very very nice.