I think that this is good news, because other companies and organisations will see and realise that they cannot hold out, despite what numerous MPs are wailing about. It happened last year, I'm thinking particularly of Virgin Active, which issued a hand-wringing, angst ridden apology to the TIMs, but still enacted legal, single sex spaces.
Slugs and land snails do have simple lungs, aquatic snails, such as whelks and winkles have gills.