@carbonazza,
The frame weight can be anywhere around 1.5kg to 2kg depending on size and options.
The weight is tolerable for me given the comfort I'm expecting from it. I'm estimating probably a built bike at 8.5kg-10kg. That is as much cf parts as i can put on it.
As for the internal routing, the technology is already there for one that looks and works like those on cf and alu frames. I've personally seen it during a local bike exhibit. The bike was a custom from a Chinese Ti co., I don't know which as the exhibitor didn't want to dibulge it. And I hate myself for not taking a picture of it!
Being in Asia, specifically the Philippines, the shipping and taxes wouldn't be a lot in my case. I'm looking at a US$50-80 for it. Based on my partial research, I could save anywhere from 30-50% off (frame only) as opposed to buying a branded one from a local distributor. Also, the local dist. will also be charging me a second shipping (local geography). It is pretty much my best option for my situation.
Why not go carbon? Simple answer, it's custom Ti... plus I got 2 cf bikes already.
I'm considering this Ti company...
http://www.waltlytitanium.com/index.html#showcase