I have an incredibly tanky melee-mage build going on with a 1-hander and catalyst. Running with Bleeding Edge, Plagueburst, Sovereign Shout, Bulwark of Dawn, and Infinity Blades. Built up through the Time Mage tree for some Stasis-benefits. Between Bleeding Edge and Infinity Blades, I always have enough of 1 resource to dump into the other for massive amounts of damage. I'm also stacking Stasis, Poison, and Bleeds for ailment damage.
Sure, you aren't going to run a hybrid build that can smack things with a sword and cast big fireballs, but hybrid builds are rarely supposed to look like that.
It should be noted that I believe that the -% reduction willpower <-> rage on catalysts means that the time before rage starts converting back to willpower is reduced.