I have the xena & gorilla too -- As I see it yes they could just pick up the bike, but if it is screaming they'll likely just move on to another target. As other have kind of said, it's impossible to make a bike unstealable, but if you make it harder than most, they'll skip yours and move on to the next.
I am the Stig's father's brother's cousin's nephew's former roommate.
Bike: 2011 Honda CBR250R ABS (Red/Silver)
Mods: ASV Levers, T-Rex Frame Sliders, Sato Spools, Tankslapper Film, TechSpec SS Tankpads, Fastpack Tailbag