I've been working at scripts based on the ones the AWMN guys did, however I didn't like the attempt using SSH to query the data.
The result can be found at http://doc.thewan.net/wiki/index.php/Development
The templates and scripts query the host based on BSSID, so changing OID's should not be a problem. The script supports client mode and ap-mode (one or multiple associations). The only limitation is, that at the time, where you create the graph, the client has to be associated and you'll have to create the graphs individually for each BSSID/client.
Here is a sample graph:
There will be more features added over the next month or so, that allow graphing of packet/byte count and various other things.
/Martin