Are smart locks limited in any way by HE?

SmartThings limited the way you could incorporate smart locks into its routines, in the name of "security." e.g. there was no way to automatically unlock a smart lock, and you could only automate the locking function under certain conditions.

Are there any similar limitations with HE? If I bring my August lock over to HE, can I create routines that will automatically lock and unlock it? e.g. presence mode, virtual switches, etc.

Yes, no limits.
I in fact have an August pro on my garage door, unlocks in the morning, locks at night...