The main reasons I've seen from vegans for not eating meat seem to be all about the morality of eating a sentient animal, the practices of the modern meat industry, and the environmental impact of it. And don't have anything to do with the taste of meat.
Since lab-grown meat doesn't cause animal suffering, and assuming mass production is environmentally friendly, would you consider going back to eating meat if it were the lab-grown kind?
I'm not vegan but if there were ethically sourced, sustainable and environmentally concious options for lab produced meats that were proven to be suitable and safe for human consumption, I'd willfully switch to that as a source of meat.
As an avid barbecue and smoker enthusiasts, I don't think there could ever be a replacement for a perfect cut of ribs or a high quality steak. I only get these from my local butcher from local free range, grass fed cattle. Those are special meals though, taking upwards of 12 hours start to finish of attention to detail and a level of reverance for the process. Not a daily occurrence. However, anything with/like ground beef, chicken nuggets and many other food products that don't require these specific cuts (this includes basically the entire giant filthy diseased corperate slaughter factories, fast food and so on) could easily be replaced by lab cultivated meats. I think that's inevitable and I fully support R&D of this technology.