I haven't had a run-in with the police yet, but the people working at Vermont Patients Alliance in Montpelier say that the local cops don't give them any trouble.
The law is definitely flawed, though. For instance, I have a license which designates the dispensary in Montpelier as the place I get my weed. Now that I want to grow for myself, I have to re-apply for another license (which costs $25) and designate that I will be growing at home. The only problem is that now I can't use a dispensary at all to get my medicine, so until the plants are harvested, I have no medication! It's a bullshit loophole with no workaround other than to stockpile weed from the dispensary before switching my license. So now I have like 3-4 months worth of weed sitting around drying out.