line lock orientation

i there any merit to @AJ/FormS argument that this would render the master cylinder inop?

I was thinking about that when I posted yesterday, and I think it will work fine.
(If you have a two peice master cylinder plunger with the spring in the middle) because the fluid being stopped to the rear would stop the front part of the piston from moving, but the rear part of the piston for the front brakes would still travel by compressing the spring in the center.

If the master has one solid piston the fluid being stopped would stop the fronts from applying.

Pretty sure anyway.

pistona.jpg