I will be trying to scan the glued one from Andy on my book scanner which is one of these
https://www.amazon.co.uk/Plustek-Opt.../dp/B005AHBGZ6 (but used with VueScan not the awful supplied software).
With this scanner the catalogue only needs to be opened to 90 degrees but it does lose a few millimetres from the bound edge. Looking at Andy's catalogue I don't think it will be a problem for that one but it may be for others.
Hopefully this will be the solution for glued ones. It worked OK for glued BVWS bulletins.
Depending on resolution it's around 15 seconds per page plus a few seconds plus to reposition. I set the scan area in the software which reduces the post-editing a bit.