I would not recommend getting pvp gear for pve use. It's PVP gear for a reason: it doesnt have any accuracy because PVP doesn't use that stat. You'll be missing 90% of your attacks otherwise.
Well, mostly wrong anyway.
Although PvP gear does not have accuracy, PvP does have accuracy requirements. PvP accuracy cap is low but around 30-50 above the base stat. Most plays will need at least two accessories with accuracy for PvP. This will also give you enough accuracy to do all the Expert Dungeons as well as all the 24-man raids. The i235 from the new Garo crossover event PvP gear will also allow you to meet the minimum iLevel to get into Dun Scaith, which drops i260 gear (many pieces of which DO have accuracy). You'll definitely want more accuracy when you start doing the Savage raids and the Extreme Primals of Heavensward.
I use my best-in-slot PvP gear set (all Crit/Det, no Skill Speed, and only two PvE accessories with accuracy) for anytime I roulette into level-synced content. Minimal (but enough) accuracy, all Crit/Det, no Skill Speed... makes me a beast at level-synced content. I also use this gear set when running Heavensward's Aethereochemical Research Facility and Great Gubal Library (Normal Mode) since although they do not level-sync you, they item-level-sync you to i180 and i150 respectively and have very low accuracy requirements. I never miss, even as tank.
Do you want to meet the i235 iLvl requirement to get into Dun Scaith and start getting i260 gear the same day you turn hit level 60?
Do you want to do this without spending millions of gil on the market board?
You can get a full i235 Garo set in one evening by doing PvP.
You'll eventually get rid of some pieces and want to get up to accuracy cap for the ex primals and Savage, but some of the PvP pieces will basically be best-in-slot for level-synced (and some item-level-synced) content.
HW does allow for multiple ways to gear up though. Just trying to save you some time and gil. But play how you want.