LOL, I have, we crossed at Domodosola. I'm middle aged so I don't look like what I assume a criminal does look like. my wife and I were sharing a compartment with a young brother and sister going through Europe.
At Domodosola, the Swiss customs guys (2) came in, took one look at them and asked, "Where is the marijuana?" I actually started laughing which didn't sit so well with my wife but we didn't have anything, what, did they think we were international drug smugglers? They made these poor kids empty out everything they had. Our next connection came into the station and we got off the train with them (the customs guys) just looking at our passports while the two kids were trying to stuff things back into their bags.
Why would you smuggle weed into Switzerland? You go there to buy it.