AH (not the pro version) has an option to encode to iTunes AAC automatically after it records something.

True, it encodes to AAC or MP3 automatically. I see two problems with doing so for the master of a podcast, though. One, any editing has to decode and re-encode, so you can get artifacts. Two, it takes up a lot of processor time, so if you're doing something relatively processor-intensive, like chatting with three other guys on Skype, you can get clipping (believe me!)

That's why I use AIFF as the format of choice for my master recording and only convert to .mp3 in the last stage before uploading.

In any case, even if you feel differently and already have your recording in final form via some other method, you can just outline and cut the part that converts to mp3. The script will still add ID3 tags and FTP the file up, which is pretty handy.