I supercharged an S a few times and noticed that you could throttle the charging if you want. Seems reasonable to balance changing rate with how much time you have. For similar reasons I recommend avoiding the natural inclination to get the more powerful charger possible at home.
I was going to reply "unless your home has 3 phase 480V service you don't know about, you're not going to be able to charge anywhere near supercharge amp flow rates..."