Double Tree explorer ?

[tetef35]

I think about a "double tree explorer" which can display 3 panes :
- left : one tree arborecence
- up : an another tree
- bottum right : the files reached by the two path


We often need to store files and directories from 2 point of view.

For example
/market/mainframe/OS/offer-1224.xls
/customers/US/Walmart/offer-1224.xls

or for a personnal usage :
/Health/Heart/DR-NO/exam0012.pdf
/family/children/steven/exam0012.pdf

What do you think ?