Yes Absolutely
Pool Home Page: MutliSig addresses starting with 3 are properly supported.
Any way as you see even though people find blocks with M addresses i just process payouts manually and all is good. But however I DO PREFER everything to work without my interaction with L or 3 addresses
Best
Loshia
PS: thanks for Merit points! This is a second block i am paying out manually. First one was to a miner who misspelled his address with some added crap at the end.
Any way there are no worries. if someone makes mistake in the user name LTC block reward goes to pool address and is not lost. After Prove of owning mistaken address i am paying out manually. That is the way it should and must be.  

May i bring the mods attention again for 5th time already. Please restore my hacked account. I do think that the above should be enough to prove i was owning it. Or i can upload whatever is needed to pool web. Link to my hacked and locked profile:https://bitcointalk.org/index.php?action=profile;u=60875