Ninja Invisible Blade question

[snex]

Invisible Blade states that "whenever a ninja uses the vanishing trick ninja trick, she is treated as if she were under the effects of greater invisibility."

My question is can I still use the effects of regular Invisibility as opposed to Greater Invisibility if I choose? If I am doing stealth and nothing combat-related, I would rather use regular Invisibility for the minute per level duration as opposed to round per level. It doesn't make sense that my ninja suddenly gets less powerful at stealth at 10th level when I take Invisible Blade.

[Cheapy]

Vanishing Trick wrote:

Vanishing Trick (Su): As a swift action, the ninja can disappear for 1 round per level. This ability functions as invisibility. Using this ability uses up 1 ki point.

Emphasis mine. It already lasts for a round per level.

[snex]

Cheapy wrote:

Vanishing Trick wrote:

Vanishing Trick (Su): As a swift action, the ninja can disappear for 1 round per level. This ability functions as invisibility. Using this ability uses up 1 ki point.

Emphasis mine. It already lasts for a round per level.

Whoops, totally missed that. Thanks. (I haven't been Invisible for that long anyway so no foul :) )