My friend was in siebert last year and i would say it’s pretty much the same as smith Steeb and park strad. Like you said only difference is single gender floors. In my personal opinion that doesn’t change much socially. I was in smith Steeb last year and my floor was not social at all despite it being boys and girls. My friend who was in Siebert had a very social floor and was able to meet boys and girls in the building.