Thank you for asking this question, its a very good question related to Grin-Nodes.
Your question started a FAQ section where we will add these kinds of questions and answers.
In short, its not possible when connecting to Grinnode.live or any other node.
If enough users request this, we could upload a snapshot of one of our high-available nodes and upload it to Github every 3 month. You could then download it and run your node based on the data we provided including the genesis block.