Multi class mnk flurry+twf?

[Mithras]

Assume a mnk4/ninja16 with twf., imp. twf. and gr. twf., using 2 kamas.

Does twf stack with flurry, so that he could get +4bab from the mnk (using flurry) and still get 3 attacks from the off hand (gr. twf.)?

[Michael Sayre]

No, Flurry allows you to act as though you already had TWF, so they do not stack.

"Flurry of Blows (Ex): Starting at 1st level, a monk can make a flurry of blows as a full-attack action. When doing so he may make one additional attack using any combination of unarmed strikes or attacks with a special monk weapon (kama, nunchaku, quarterstaff, sai, shuriken, and siangham) as if using the Two-Weapon Fighting feat..."