Can't really tell much difference overall although trespassing and petty thefts from carports, garages, back yards, etc have dropped quite a bit. Road rage incidents have went down significantly too now that I think about it.
Lots of fucktards (rightly) getting busted for toting into the beer joint. Johnny Law slams 'em down like they'd punched his mama in the face and suggested he should engage in intercourse with himself and the equine that conveyed him to the locale.
Also noticed recently that bars are putting up signs reminding pot folks that """"medicinal"""" ganja