We haven't done this dungeon in a while but our guild used to do it quite a bit. We used 2-3 people running discord heroes, one of the players was SoS. I think we sometimes used a perma who ran off before getting keys to zone faster but it wasn't necessary, just shaved off a few mins. If I remember right our total times for the dungeon were around 25 mins in HM.
It's not really that hard of a dungeon to just play though and SC with cons didn't seem worth it.
It is an easy dungeon to fight through. Your main time saver is to have someone stay by the gate at lvl 2 while the rest of the team gets the key. That way you bypass all the spawned destroyers. As for rest of the dungeon, the vatteirs are very prone to tank and spank tacs as they ball rather quickly. PI is usefull vs the vatteir bosses as well as the destroyer boss. Think if I recall correctly using a perma, 1 sos, 1 aoe, and 5 heros we did this 20-25mins with guildies and 25-30mins with pugs.
for the life of me i cant remember how my old did it. they did have a SC build for this.. i know it required some perma.. like 2 monks.. and alot of derv aoe. memories really bad tho. ill try and find old friends from the guild and ask for the builds. and try and figure out how to post them on here