To swap road fairings to track ones for a track day then back ? On my old 5jj r1 it was a piece of piss but the blade fairings dont look so easy to whip off and on.
Once you learn how to take them off the first time, it's so much easier the next time. You should be able to remove and fit the other set within 2 hours taking it very easy, so long as you have already had the track fairing fitted before. Ie sometimes they need a bit of fettling to fit right.
Like anyone removing fairings for the first time, it's certainly sqweeky bum time. I guess the more you do it the more fluent you will be?
2 hrs sounds reasonable time to me. Better that then risk ruining the stock ones if I have an off on a td. Will read though some previous threads for what fairings others have used.
Just remember that it will take you a few hours to fit the track fairings and have them fitting so that they can be easy to fit again.