Anecdotally, several people I have talked to about this had no problem with the new behavior (after a relatively short re-training time), but did find switching

Anecdotally, several people I have talked to about this had no problem with the new behavior (after a relatively short re-training time), but did find switching between touchcreens and touchpads with opposite behaviors frustrating. If you do have a problem, then you can switch it in System Preferences. Everyone wins.