I suspect they may pick up a few viewers around Kingston, who wouldn't bother with a VHF antenna. Otherwise, the gains seem pretty minimal. According to tvfool, the channel 6 signal will still be much stronger for me here in Poughkeepsie.
It will probably be just strong enough to wipe out the WNYE signal that I can pick up off the back of my antenna anytime there is a hint of favorable atmospherics. Of course, I must live in some kind of Signal Vortex, since I get WNET-13 and WPIX-11, which TVfool indicates I shouldn't and I can't get WNYT-12 and WXXA-7, which TVfool indicates I should.