Most likely, yes, with proper assumptio and safety wall support.. you should be able to tank a good 80% of the MvP's.
Orc lord is quite hard because of earthquake, I think with res support or the soullinker buff you should be able to pull it off.
To be honest, all MvP's that have earthquake automatically lower your chances of tanking it by a huge amount without decent support.
You could put an alice card in your valk shield, but it depends.. since some MvP's have insanely strong mobs (bio3, vesper etc).
Err, goibne and valk shield is good, but don't forget the stone buckler, odin's and magni cap set, it works like a charm vs some hard hitting melee MvP's.
There's also some MvP's like incantation, orc hero, doppleganger who do spiral pierce, without pneuma or assumptio this REALLY really hurts. I suggest you use errende, and keep spacing around untill the distance is 2 cells between the MvP and you while you're pneuma'd.