With the V3 firmware update of the VB-101, and the soon-to-come Torpedo Studio, it will be possible to plug one amp to the Torpedo loadbox (amp input), and a second source to the Line Input, and feed these two inputs to the two channels (each input will feed one channel). So, to achieve a biamping setup, you just need a way to input the second amp to the line input of the Torpedo. That can be a second loadbox (why not the Reload ?), or a Preamp Out or Send output from the amp.
With the Torpedo Live or CAB, you will need two loadboxes, and a line-level mixer (a simple Y-box or cable may be enough), fed to the line input. Not the simplest setup... :/