Finished - but only with a very great deal of help from my friends - I know I couldn't have completed it unaided in a million years.
I'm
still struggling to understand the parsing of several clues, even after worrying-out a number of stinkers after being given the solutions - I
really can't see the white war paint on the Florid gold vests...possibly the most Florid clue ever - and Snag? - how?? -why???
And I've become an expert on the selective filtration of ultra-wideband cellphone radio signals using notched microwave antennae...
This is quite certainly the most difficult crossword that I've ever attempted; and very possibly the most originally constructed, quite apart from the extraordinary - and necessary - complexity and inscrutability of the clues.
The mental genius required to design and execute such a wonderful construct is quite beyond my comprehension - I can only assume that Twin has engaged in a Faustian pact with the Cloven One - the format of the final solution that this particular collaboration leads to is certainly redolent of the banality of evil. I hope that the price is not too much to pay...
But glorious to contemplate, even if one couldn't achieve it other than as a lame dog.