Vuarnet EDGE 1613 Inspiration?

Just seen these vintage RAF sunglasses on Silvermans's Instagram. The inspiration for the Vuarnets? Around half the price and with military pedigree, even if not screen accurate.
https://www.silvermans.co.uk/products/raf-sunglasses?_pos=1&_psq=Type+G+22G%2F1398&_ss=e&_v=1.0