Guild Wars 2

So I recently made my first engie ever and decided I wanted to go with pistol and grenade kit for utility.

but in the traits tab there are 2 separate ways to go for those (explosives that gives power/condition duration and Firearms that gives precision/ condition damage)

and my question is, if I put points in to the firearms line, will that also give precision bonus if I have grenade kit equipped or does it only give effect when using a gun? and vice versa: if I put points in to the Explosives line, will that give the power bonus when I use a gun only?

You will benefit from those stats regardless what weapon / kit you choose to use.

Alright, thx for the answer