This might be old news to some, but I was pretty impressed after trying to do besieged on my whm43 (since my mnk xp and merits are capped and i no longer need IMs for anything):
Not only did I get 665 xp and IM on a lvl 43 job (on later times I got the full 700 xp too), but I got 7 (!) levels of healing magic in just a single besieged by curing generals and guard NPCs instead of people (I tried people too and never got any skillup, but on NPC it was .5 every other spell or more).
http://i10.photobucket.com/albums/a1...ealing0_cr.jpg
http://i10.photobucket.com/albums/a1...ealing1_cr.jpg
http://i10.photobucket.com/albums/a1...ealing2_cr.jpg
http://i10.photobucket.com/albums/a1...d-healing3.jpg
So, while I wouldn't recommend everyone try to get xp on their low lvl drg or hard to xp job (that would be leeching a bit), curing NPCs also really helps the outcome of besieged, those NPCs are pretty strong and once they are dead they are gone, not to mention how important it is to cure generals and keep them alive.
Anyways, i just thought i would share this to encourage anybody who maybe doesn't have much left to gain from besieged to still come and cure NPC generals for huge skillups (if you are whm in good xp pts and get fast xp and use regen a lot, your healing skill can fall behind easily).
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