Imitation meat and lab-grown meats are quite different. I would be more psychologically uncomfortable eating lab-grown meat knowing that it's real animal cells, not plant cells, even if it was never sentient. Not to mention that the disgust factor you mentioned would still be present for lab-grown meat as it's supposed to be biochemically identical.
Imitation meat is ok and I will eat it from time to time, but I don't like how much vegan eating is centred around mock meats. I prefer stuff that doesn't try to imitate animal products; it generally tastes better to me, and it's way cheaper. Nothing against imitation meat; if you like it, go eat it. Just not huge on them myself.
I'm sceptical that lab-grown meat can ever become sustainable, but if they can pull it off I won't try to stop them.