When breastfeeding DD1 I barely realised breast shells existed - I wish I had as in hindsight I probably wasted pints and pints of viable milk on breast pads! I'm collecting between 5 and 10 oz of 'spare' milk from leakage alone, per day. It's not all foremilk as when tiny DD swaps sides I put the shell the side she's finished with to gather some of the hindmilk too. I know not everyone leaks as copiously as I do, but I've also found my nipples are in much better shape this time, partially due I'm sure to being dryer through using the shells, rather than sitting in sodden pads throughout feeds.
I found catching all the various drips and gushes and soggy leaky pads such a problem last time....I don't know why I didn't think of these before!