Yes, this is the tool I was talking about. For a d-lock (aka u-lock), you'd need a quite large lock with a lot of space between the crossbar and the bike for a

Yes, this is the tool I was talking about. For a d-lock (aka u-lock), you'd need a quite large lock with a lot of space between the crossbar and the bike for a pipe cutter to work. The risk does exist nonetheless, which I wasn't aware of before. Thanks for pointing that out!