Technically 'yes' but in practice its best avoided.
As long as both access points have the same configuration for the SSID (same BSSID, same PSK), and are on the same L2 network, it should work. However your probably going to not have smooth roaming if there are some features enabled like PMK caching or other fancy pants stuff going on in the backend.
Basically just try not to do it if you can =P
If you can't avoid it, then if you run into not-so-smooth roaming, just make sure the above has been done and offer up a goat to the Lord of Roaming.