Slick! I like the variable front-back geometry. I wonder what an XL-650c, or 650c-XL would look like....

Ceramic headset bearings? That's not the first time I've seen this, and I simply don't understand (unless it's to save weight).

WRT Indonesia: there are known scams out of Indonesia...

VeloTech in Palo Alto is a Cyfac dealer. It would be interesting to ask them about this. But I sort of view custom Al as a much more cost-effective weight-sensitive option in tandem frames for part-time tandem crews. Not that Ritterview's DragonFly isn't drop-dead gorgeous...