i was thinking the same thing and will test that out now.
/edit:
i tried moa therma because it has both a vertical and a horizontal magstrip
-) projectiles are not deflected on horizontal magstrips
-) projectiles get deflected upwards in the vertical looping part
gonna try de konstruct now to see for vertical non-bendt magstrips
/edit2:
well ... im not entirely sure that de konstructs magstrips are vertical,
but the projectiles dont get deflected on the straigt part of the magstrip.
but as soon they are on the curved part, they get deflected towards "up".
up refers to the real upwards direction ... at least i think it is.
actually i even think this should be physically correct, at least if you
leave out friction effects. but i might be wrong ... i only study physics.