[Kwant] up/down spin conductance from Greens function like smatrix

Dear Sir, In the new version of Kwant, it is possible to calculate the up and down spin conductance. In order to calculate the different components of the spin conductance (G_x,G_y,G_z), Greens function can be used as shown in the following mail-archive link:https://www.mail-archive.com/kwant-discuss@kwant-project.org/msg00483.html If I want to calculate the quantities like G_x^up or G_x^down, is it possible to calculate these with Greens function like the smatrix. Another question I want to ask (forgive me if it is out of the context). We can calculate the zero temperature charge shot-noise using the kwant.physics.two_terminal_shotnoise. Is there any option to calculate the spin shot-noise? With Regards, Sudin Ganguly