I do some Magnet fishing.
my Magnet can grab about 130 kg with something big with lots of surface on it.
the xg3 v2 is no problem at all, even if my skin touches the magnet.
the v1 is a different story. one pole gets attracted, one pole repelled, what pushes the pointy sides to places where they shouldent go…
but if you take care its should not be a problem.
you feel the discomfort and then just can go on distance 
should not be an issue to try how close you can get.