1) Mine is on the liquid side. I find it easy, since I do it a 2 cup measuring cup I drink the first part and the berries and the rest with a spoon.
2) Yes. I do it over the sink, afterwards (same with OO) I splash water at my mouth and lips, dry with papertowel. Put one altoid (or any peppermint) in my mouth and then let my nose go.
It is important when you breath in between sips to keep your nose closed too.
To be honest about it in the last year I have been putting some drops of stevia in the ES. I did this for my brother who was visiting me and it was his first flush and I did not want to discourage him, he hated the ES more than the OO.
Don't forget I am an experienced flusher, more than 50 in 4 years, so I often make a lot of changes.