Forgot my BCAAs this morning but still beasted the gym, had a 10 - 20g of whey when I got to work!
FWIW I've been continuing IF for a month or so without BCAA because I couldn't be bothered with the expense. I've just given in and grabbed some scivation xtend so I'm interested to see if it actually makes a difference now I'm used to fasted training without it.