On the assumption until recently that the native MML sets were staying around the windows have been replaced on the whole fleet of Porterbrook mk3s with the laminated version over the last 18 months or so.
The Angel ones have, too, with only a slightly longer life expectancy.
It was explained why above - low risk of fire, better containment, overall safer than toughened.
The very safety conscious-passenger may like to take into account that the modern 222 fleet retains toughened glass and hammers (presumably, as a fuel tank + source of ignition is under every coach) and could be viewed logically as less safe than an HST in this respect.