On liners... We dont' have the LS. When DS was very little, we didn't do anything with the poo, just chucked nappies straight in the nappy bin (using flats then) and washed every day. With BM it all just rinsed out very easily. As he got older we rinsed the nappies before putting them in the bucket - just used the laundry sink.
We used microfleece liners, which are great for keeping bums dry. The liquid poos can't really be kept off the nappies anyway, so I agree that the disposable liners probably aren't much good early on.
Recently I began using disposable liners. Now that he's on solids they do catch the poo quite well. However, they also hold moisture against his skin and he's been getting a bit rashy, so I only use them in the morning, when he's most likely to poo. The solids go in the toilet (we also use toilet paper with this, especially if he's not in a flushable liner when he poos) and we rinse the nappy in the sink. I just clean the sink out with pino-clean after.
The sun is great for getting the stains out.