hybrid graphics laptop and nouveau

[AV]

Hello,

This concerns an Asus Zenbook with hybrid graphics (Intel/Nvidia).

1) There are 2 ways to deactivate the nouveau driver:
   by adding 'modprobe.nouveau=0' to the kernel cmd line OR
   by adding 'modprobe.blacklist=nouveau rd.blacklist=nouveau'.
   Which is to be preferred?

2) I do the above because there is as yet no Nvidia driver that 
   gives a hybrid solution like under Windows and the Intel driver
   is more than enough for my needs.
   However when using a solution as described in 1) the Nvidia chip
   will still drain power. Is there anyway to deactivate the chip?
   (short of removing it from the motherboard if possible).

AV