Split-tube Dobs?

I have heard a bit of buzz about new split-tube Dobs from major manufacturers, but no details. Does anyone know more? Do they also retract for storage/transport even if not for hand-carrying? Thanks,

-- William Chang, Saratoga CA

On the European web-site of Markus Ludes there used to be some information about a Japanese split-tube Dob called Ninja. I haven't visited the site for some time, and can therefore, not tell if it is still there. Personally, I decided to go for the Portaball 8-inch, and I think this will be my choice whenever I upgrade to the 12 - 14-inch size. The Ninja could be transported by a standard (Japanese) car, but the larger models would be quite cumbersome to transport manually.