PSV only has psp mode hacked, and not fully like the actual psp hardware. Just like ds mode is "hacked" (for lack of a better term) on the 3ds.
This doesn't mean you can run homebrew that fully utilizes the power of either system yet.
They're mutually exclusive.
Using hbl on PSV is equivalent to having a hacked psp.
Running a flashcart on 3ds is equivalent to running a flashcart on a ds.
Neither system has been cracked to use the full functionality yet.
Just speculation, but I feel it's safe to assume having psp mode hacked won't lead to PSV cfw just as enabling flash cart use on 3ds didn't unlock 3ds mode.
Sry for the wall of text.
