So, everytime I start playing this, a few questions come to mind.

1. Does the damage bonus apply to cross-perk weapons?
For example, if I were to use a 1858 Revolver, would it get the damage bonus from the Sharpshooter for said revolver?

2. If I use a crossperk weapon, does it get benefits from both of the perks it's for?
For example, if I were to use the HX pistol, does it get benefits from both Demo. and Gunslinger?

3. If the above are true, am I better off using crossperk weapons considering how the weapons available to buy at the trader are always random?

And also, I had posted these questions under the main game forum under the subforum of "Modding Workshop Discussions" and never got an answer.