Not yet.
But as nikos indicated: " ... some tree developments are planned for the pro version for the near future."
Even so, note that he did not say exactly what developments, nor did he promise two trees.
Ah yes.... I can guess where this request is coming from :) I have been using Novatix Explorer Plus and then Powerdesk over many many years and unfortunately became very accustomed to the "two trees" view. I'm slowly working my way through the single tree view in the registered version but I would name my next child after you if you could provide the two tree feature in a future relase.