On hib/lancelot I recently led a raid into the summoner's hall. We didnt get the numbers that we wanted to kill ther G summoner but we had 3 full grps and decided to try the lesser summoners. Just to get the information out 3gis about the bare minimum to try these summoners as we were only able to kill 2(hibernian and albion) summoners. The trick to killing these things is to kill the mobs that they summon, dammage add the tanks and swing away. They hit about as hard as princes but have buckets of hps and annoying parry skills. Iy took our 3g 15mins to kill each summoner with many casualties. Also they only drop one item upon death, however the items we recieved were quite uber, +5parry belt and an amazing druid/bard shield. If you have people who are agro to the sidhes if becomes a real challenge as our grps were eventualy rolled on a pull of 4 sidhes. Thats my experiance..I hope it helps those of u planning the next raid.
Satriani
49Hero