Thanks for the reply.
I agree i don't really like having to sit down, but at times it can't be helped. But with squatting rather than sitting when i reach ATG, i can't help but round my low back, is this fine seeing as im not carrying a loaded barbell or anything like that, or is it still considered a technique flaw? I just find it difficult to keep my spine neutral when going ATG and most people that you see in daily life squatting that deep have a rounded back, but then again, most people don't workout/squat.
With regards to arching the low back, i used to think of it as trying to get the tailbone to touch the ceiling, it seemed an easy way for me to arch my back, but is this too much lordosis?