Yes NPS is similar in terms of the HOW and WHAT but the WHY behind assessing a company culture via the people within the organisation, who directly experience and contribute towards the customer culture is very different to NPS.
It's not a customer perspective LOOKING IN at an organisation, it's about an organisation LOOKING OUT at itself, looking outwards, at its customer centric behaviours and culture.
So it's not about what the customers say about an organisation, it's about what the people within that organisation really think and feel about their organisation's customer culture.
Their own commentary on customer insight and competitor insight, customer foresight and competitor foresight. Their organisation's Peripheral Vision, Strategic Alignment, Cross Functional Collaboration and such customer culture factors, are where the superior value sits.
Their reality captured in the verbatim and their assessment of the culture reported in the inventory questions, are what creates the "what next" action plan that you work with (facilitate). This is where the bigger revenue is earned and solution traction is gained.
(Great answer provided by Accredited Partner - Greg Tye, Director, Blue Steps Consulting in Sydney)