VERY VERY simple script to change the current layer to the selected object. I run this as a command and set "CL" as an alias. Maybe there is the same built-in command...similar I found was "ChangeToCurrentLayer",which changes the object's layer to the current layer. be sure to save this to the folder that rhino searches when opening.(Rhinoceros/…

CurrentLayer_cmd.py

import rhinoscript.userinterface
import rhinoscript.geometry

import rhinoscriptsyntax as rs


__commandname__ = "CurrentLayer"

def RunCommand( is_interactive ):
    '''
    CurrentLayer:
    changes the current layer to the same as the selected objects layer.
    '''

    obj = rs.GetObject('select object to change current Layer',preselect=True,select=False)
    if obj==None:
        return 1
    objLayer = rs.ObjectLayer(obj)
    rs.CurrentLayer(objLayer)

    return 0