I've had luck with pitching one packet of Notty in a little experiment
a while back. It turned out fine (properly hydrate).
On the other hand, a very recent batch of bitters I pitched one hydrated packet of Safale-04 and (for whatever reason) ended up with autolysis that converted into some sort of funky, infectious sulfur brew.
For safety sake, hydrate both packets and pitch...the harvest the abundant yeast that will come from both fermenters. You'll have enough to pitch your next 20 batches.