From what I saw you can do both, since whoever is becoming a subscriber depends on which platform they want to support you on. Not sure if there is any bad juju for having both, since I've only ever used Patreon
Viewing post in Day 2 of the Itchpocalypse, an update comments
I still feel like we're going around in circles here.
You can certainly have account on both Substar and Patreon, as a creator.
You can certainly support on both, as a supporter.
My point was that I only want people to support on Patreon as a last resort, as detailed in my most recent post. But speaking of, Patreon is up, if you somehow didn't see that post. Look forward to seeing you there, if you'd like.