I'm vegetarian and I would definitely eat it, and most of my vegetarian friends would as well (assuming they figure out how to produce it without fetal bovine serum, which isn't vegetarian). But certainly everyone is different. I imagine some people will still have ethical qualms, and I know a number of vegetarians who don't like the impossible burger because they don't like the taste and texture of meat, so presumably they wouldn't like lab-grown meat either.
Actually, there are fringe but growing number of people who hate vegans because vegans kill and torture plants. Plants after all have senses and can feel and communicate with each other. And they find people who eat fruits disgusting since fruits are a plants' womb and eggs.
http://www.bbc.com/earth/story/20170109-plants-can-see-hear-...
https://pursuit.unimelb.edu.au/articles/plants-have-feelings...
Just like vegans, these people have too much time on their hands and an unhealthy desire to feel morally superior to others.
It’s like living life on Very Hard mode.