Personally went full STR to slightly improve self-healing, but many end-game WARs seem to have trouble surviving spike damage in late end-game (Titan HM and Coil), in such places VIT might be worth more than STR just to have an extra buffer of health to help survive extreme damage spikes.

If you are in no hurry to tank that kind of end-game content though, then you'll be more than fine going full STR. There's nothing you can't survive just fine with the base HP pool before (it's only at Titan HM where things start getting hairy), and the extra damage/enmity/healing/parry is really useful.