By way of Clifford Kvidahl it has come to my attention that the work referenced by Spicq is now in the catalogue of a new publisher, Peeters. https://community.logos.com/forums/p/194816/1123871.aspx#1123871 With this development it is hoped that FL would renew its interest in translating this work and offer it in Logos format.
Your comment would be appreciated.