[Xastir] differences between postGIS and postgres?

[Jason KG4WSV]

I'm trying to come up with a database and schema for a Qt APRs client
based on xastir.  It's technically not a port, although the intent is
to offer it as an example xastir V2.

I'm vague on the differences between standard and spatially enabled
SQL databases, especially on the user interface side.  If it is
implemented in standard postgres will I have trouble switching to
postGIS?

please reply to the developer's list, or me directly.

thanks,
-Jason
kg4wsv