Can you make an Ectoplasmator into a staff?
Firstly, the ectoplasmator can not be added onto a staff to create another staff. It is not an orb, nor is it a talisman (here I'm referring to the talisman staves from GOP).
You probably saw an Armadyl battlestaff, which has the symbol of Armadyl on the top. There's a picture of a player wielding the staff on the page.
The staff does have combat bonuses.