[Amps] 4-1000A in Passive grid-driven use?

[n7ioh]

    Are there any problems in using the 4-1000A in a passive grid-driven 
mode on 160 - 10 meter or on 6 meters?  If not, what kind of output can 
I expect to get?  Second, I have seen amps that use a roller inductor 
and not a band switch, any thoughts? 

                         Thanks, Al N7IOH