Jur,
After distilling much of the information available on the "folding bike forums" over the years I always wondered how it was a Ti-Frame was NOT commercially available as a folding bike. I am curious about your project and where ever you have one built, it will be pricey. I would imagine it could get cheaper to have 5 or 10 built since there are questions of frame jig-set up and bulk-pricing, though I would be a bit skeptical about a Chinese-made quality Ti frame. It would be hard to do 'quality control' from overseas and determine the exact type of titanium tubing which would be used, welds etc. Also as much as I like the Swift design: I would also consider a "Folding Twenty" style ti-frame, preferable made in the USA. ( BTW: The guy slamming Bike Friday's should take a step back and look at who is actually building the brand of frame he has chosen to ride: What is their wage and how good is the quality of frame built by under paid/ under duress worker? Will they replace his frame when it breaks? )
Anyway, it looks like the project/subject you have raised might be a mute point since the good people at Swift stand by their product. I encourage you to weigh your old frame and compare it to the new one. I would love to know the weight difference of the new Swift and the old Swift. I think you will be surprised.

Thanks Jur!]
Always appreciate your information and experience on this forum.