Nice idea GLC. That should work, someone got to do some testing.
Also, how about using a five gallon bucket with a resealable lid. Put a air gauge fitting on its lid and using it for a pressure vessl. Not alot of pressure, say 5-10 psi, but enough to increase bleed thru you would like to see in the fabric.
Or take it the opposite direction and vaccum the 5-gal. bucket. Infuse the silicone under negative pressure??
Ambulo tua ambulo.