Haven't touched Guardian in a minute!
First off unless your guild/group wants you to be the condition guy I wouldn’t use + condition damage gear as there are others who do it much much much better.
Namely warriors, necromancers, engineers & even rangers.
Second if you insist or are chosen to be the condition damage dealer mixing beserker stuff with condition damage stuff really doesn’t do you any good.
Third even if you go full condi a fair amount of your damage will still be physical so damage modifier traits wont hurt. (I would exclude big game hunter however because as a condi spec the physical damage modifier wont be worth losing the passive of justice unless you know something is going to die asap to reset it via the radiance trait)
Now if you change your mind after this and end up going for a physical damage spec I would suggest http://gw2skills.net/editor/?vVAQJARDnsABVdiddC8Dhl4BTe/1/WgZpoXUMqKA0AqXA-ThRBABP8EA0TXAAXCAKV/xMlgXp8DA-e
Few things to note.
This spec assumes your group can maintain permanent fury.
You can use scholar, flame legion or ogre runes depending on how much money you have.
The third utility can use more or less anything you want given the situation.
The elite can be swapped for feel my wrath if you dont need the invulnerability and just gota have that quickness.
Ok it was just an idea, my Guard has been benched for a couple months. So I wasn’t fully aware of what would or wouldn’t work, I’m tossing around a few ideas