The contrary will be the case as an equilibrium will be established soon between the booster in the sponge and the booster in the atmosphere of the vacuum box.
I heard and read about that as well, however, I just don't get the sense of that. You would need to manage to apply an absolute even layer of glue prior to boosting. If the glue layer is not even - but let's say maybe thicker in the middle of the blade - then the effect is that the booster...