Is it a good idea to mix juices in a single carto to create a blend or does this affect the carto? I ask because both juices I'm planning on mixing are of different texture: one's viscous and opaque while the other one's clear and fairly viscous. The latter's 80VG/20PG and the former I'm not so sure of. Also, is the difference between VG/PG significant? I'm a little unclear as to the dis/advantages of either.