We have dyform on the Tornado, and it's no worse than regular 1x19. We are always on the alert when rigging tough, nobody are allowed to step on any wire or rope! Both Frode (crew) and I used to do a lot of climbing, and it's a big no-no to step on any ropes there, a good habit we brought with us.
One of the disadvantages of dyform is that you need terminals on the end of the wire. These are impossible to inspect without proper equipment (hmmm, perhaps I should try to do some x-rays of them? Wonder what exposure time you will need..).
You will probably have a better chance to see if the swaging on a 1x19 is about to give way. If the rigger put on two swages your are even better off. Most of the Tornado shrouds I have seen give way have broken inside the terminal, where it has corroded.

Myself, I would like to try synthetic shrouds once. But not with covers, and I would like to use wire where the shrouds bend around the mast.