Been trying to look up some reliable opinions on this subject, but come across mainly a lot of conflicting thoughts. The basic idea I have had for some time, is it viable to go DW as a frost tank, with two Last Words? Has anyone actually tried and tested how it'd work?
I have compared it to Frost Giant's Cleaver and assuming near 100% up time, the Sta and Str benefits are higher than on the cleaver. However, Last Word is still a fast weapon, so not ideal for DK tanks. Also, ranking the Str proc against cleaver's ArP, Crit, and AP is really hard.
They say you get 100% uptime from just one Last Word, so two of those seem to be redundant. I would suggest getting something slow for the main hand and check that the proc uptime in offhand is indeed 100%. If not, you might want to keep it in main hand. But on the whole, it isn't really worth DWing two Last Words just for the 100% uptime. I'm pretty sure the proc does not stack, so you'll loose quite a lot of stat points.
Thanks for the replies. My apologies for the late response myself, been fairly busy the last few days. But yeah, two maces stacking would seem a bit ridiculous and if the proc 100%, makes sense to have something else along with it. I'll probably try with the Frost Giant's Cleaver, if the darn thing would just drop. Thanks again for the clarification.