I've been told recently that Shell also opted for the lighter and cheaper Sea State 5 float kit on their S-92s. I'm surprised
Which machines are you referring to? SS6 floats weren't available when the BSP machines were ordered and in any case, as Variable Load says, SS5 is more than adequate for the sea conditions over which they operate (daily wave height generally around 3-6 ft.) Plus, the High Intensity Strobe Lights - which are fitted where the floats would be - are probably more of a 'real world' safety enhancement!
Sorry if that contradicts the negative connotations of your story teller's intent
