1.)Placing calls takes...about 7 seconds longer
2.) Duplex is not completely full duplex —you have to wait slightly longer for the other person to shut up
3.)Sometimes you get that mathy, "tinny" sound"
-> I'm left to guess that you want the full duplex you enjoy on POTS. (do I need to expand all telephone acronyms when discussing telephones?) With PANS we get new issues and have to define so much.
--> If you are after the POTS full duplex, then my answer will change to no.