My tank/dps build is centered around that synergy. I use Rally from 2hander and Surge along with this ultimate to positively melt mobs. I took the morph that increases range and radius of heavy attacks. This damage along with heavy armor and Thundering Presence is amazing for tanking and DPS.The ult removes your weapon(s) from your hands and your attack animations will look different. A cool thing about this ult is that it allows you to use 3 different loadouts - your two regulars and one which is active as long as the ult is running. On the third loadout, I usually slot abilities which go well with the ultimate's design, such as encase for CC. Also notice that this ultimate works in conjunction with surge so you can deal out some serious damage with it.