i install car starters/alarms for a living, so i couldn't bare not having an alarm on my duc. So i broke down and ordered the Scorpio SR-i500 from tricktape.com, arrived today and installed it in ~20mins. Very nice system, and is comparable to many of the car alarms i install (i.e. Viper, Clifford, Autopage, Prestige, etc).
Now when my bike is home its stashed under my porch, covered, wireless cam'd, and docked on my condor pit-stop that has been bolted to the concrete and with a custom welded chain to the entire assembly. Yeah i'm paranoid but hell i figure if they're gonna steal it i'm gonna make them work for it.
At work is why i mainly got the alarm. I work at a "tuner shop" so i get alotta idiots who like to think its ok to sit on my bike, couple of weeks ago almost had a dumbass drop the bike on me because of the retracting kickstand. Hell today a guy decided to put his 5yr old son on my bike and decided to stand on my seat and jump around, so i quietly jumped into his car and moved the seats/mirrors and blasted his stereo. But yeah since i'm never further than 20ft from the bike the alarm is mainly going to be for warning idiots away.