I hope to have some updates on this in the next few weeks.
Edit:
Rest assured I have not abandoned this project. What has abandoned me is the weather, more on that later. The plan was to build them (i did), live with them through the winter (i did) and try and tweak and tune them as time went on, then post the finished and finals on both the paper woofer scan speak version and the SB acoustics Al woofer version around now. The schematic post 118 is still the latest and greatest for the scanspeak woofer, and I have zero complaints about the speaker other than - its a bookshelf, and I want floorstanders. Other than that, subjectively to me it is absolutely perfect. As these were my mains (I was daily driving them, tv, music everything) the floorstanders need to be built first to replace them also. I completed these just last month, so now have the time to go back to the aluminium woofer version I posted originally in this thread with more knowledge and also complete that design.
I see a couple people are following or attempting these designs so I need to get my ass into gear. One problem. The weather here. Has. Been. BAD. Like, cant really go outside bad. Pretty much, every freaking day. And its our summer, which is normally stinking hot beach days 80-90% of the time (Seems to be a bit of this going round worldwide, funny eh?).
So bear with me. When it dries out, and it will, I will be much more active with the speaker work. These designs deserve finished and final revisions.