@Reto-Da-Liz
It depends, really. My melee footwork is actually not as good as some of the other recons I know, so I generally use swords when I'm laggy or if the other team isn't too nimble. For tough fights, I use a pure mobile gunslinger set:

Justifier set [piercing def, max ASI with guns]
2x Trueshots [vh dmg]
Hail Driver - for the 1v1s and outnumbered situations
Storm Driver - primary gun
Umbra Driver - for damage/countering elemental defense
Valiance - for gunfights :x

I sometimes swap Hail out for either Nova Driver (if the most dangerous person on the other team is a shadowsun/kat-hat/snarboalx) or Stagger Storm.

Despite just wanting to be a dangerous all-around recon, I somehow ended up finding my answer in guns, following a silly skill-based theorycraft that "if you have perfect aim/prediction, you can keep interrupting them before they hit you".
Unfortunately, in reality, my aim is far from perfect (I just came from some really terrible matches where I had trouble finding the distance to lead), and I actually have more trouble vs striker gunslingers than anything, but when the latency is nice, I can really feel the potential in it.

There are actually a lot more nuances to my actual playstyle (ex: I don't alternate guns), but basically, things that get shocked near me will probably die.
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Really random aside, but when I first started experimenting with gunslinging/recon guns, there was a certain mechanic that let your alchemer shots bounce off yourself and other teammates. With my shock-based tactic, I found that if you circled up close during shock, you could double-ricochet off yourself and back to your enemy, leading to insane near-instant-kills.

Even though that mechanic is long gone, I still prefer ultra-close-range combat (while I can't self-ricochet, it's still possible to double-ricochet during shock if you angle it right). It's really risky and probably gets me killed more than I should lol.