Time to retire Currier languages?

[MarcoP]

The folios of the manuscript are known to have been shuffled out of their original order.

That is simply not true, it is one of thr urban legends of Beineke 48 research.  There is no reason to believe that the order of the original author was changed because there never was an order planned beforehand

The idea that there never was an original order is bizarre but maybe it is not entirely impossible. If one prefers to think of a single author who gradually drifted through different writing systems, one should take Emma's point as hinting to the fact that the binding does not respect the order in which the pages were written. Maybe there was no planned order, but if the manuscript was written by a single person there certainly was a chronological order.
Pages belonging to the same bifolio show a fairly consistent language, but bifolios seem to have been bound arbitrarily, maybe only considering the illustrations, so that pages that are now consecutive have wildly different bigram distributions. 

   

For instance, these 12 pages consist of three bifolios. If one looks at You are not allowed to view links. Register or Login to view., it is clear that the outer bifolio f26/31 was written in a different time (and/or by a different scribe and/or with a different writing system) than the other two bifolios.