Laura updates?
Jen
I don't know about locks used by Mysteel, but good luck trying this with a tollyboy lock. If you break the locking mechanism it does not open and then you are stuck in the belt.
I have talked to the owner of Tollyboy and he once had to help a client out of the belt because of a broken lock, and he said it was far from easy because most tools are simply not safe to use when the belt is actually in situ.
curious
In the case of a Tollyboy with a tubular lock, the only reasonable way to open it yourself is lockpicking with a special tool or an improvised pick, made of a rubber hose of the appropriate diameter. Forced methods would require the participation of a second person and adequate protection of the body from injury.
Abby82 Yeah but i couldn't imagine that i could break my belt without tools with violence
i mean my belts have seen some violence by me but still its a small key what has got them off me and not my violence
so i don't see it as a big challenge to break the belt if it has to be in an emergency, but the big challenge is not to leave any traces and to be able to close the belt again, that's the point where i always fail so far 
curious
It is certainly much more difficult than with a padlock in your hand or hanging in front of you, because it is more difficult to manipulate. It also depends on the quality of the padlock. As for pressing the pins in such small padlocks, it's usually done at random, without much judgment as to which pin has been pressed, so there won't be much of a difference in that regard.
Andrew One must secretly train in the art of lockpicking. However, the problem may arise when your lockpick breaks and gets stuck in the lock...
yes, there are many risks, that's why i have only tested it in a very limited way (without much success), i just want to say that it's not hard to destroy the belt, but extremely hard to do it without leaving marks
- Edited
Angelina destroying the belt will obviously leave pretty significant evidence in form of the destroyed belt 
On the other hand the Burgwatcher padlocks used on My-Steel belts are quite small, which obviously makes both picking or even bypassing them easier. The mechanical design of the locking plate probably precludes shimming (the lock itself can be shimmed more or less by design), but I would not be surprised if there was another bypass vulnerability. Well I probably should buy the lock and try that.
curious well, that is one of the good things about the “vending machine” lock. The easiest attack involves readily available tool and outright decoding it, handpicking gets tedious very fast because of how many times you have to turn it. And getting the mechanism somehow stuck is a recipe for power tools.
On the other hand, usually the internal mechanism of the lock (or in case of padlocks the lock body itself) is made of brass. And it can be pretty safely etched away for the lock to just open with ferric chloride (it leaves indelible marks on just about anything including skin, but it will not burn you and as the skin regenerates the mark is about as much permanent as henna “tattoo”).