Mmm - if there is a preset that produces that sort of grain, I could do with it sometimes for odd bits of film retouching.
But seriously, I've not had a (UK commercial) client in the last few years say they'd rather I shot on film or wanting a precise 'film look', so whilst the plugin produces very nice results, I'm just not sure why I'd want to look as if I used Kodachrome (processed with my secretly hoarded stash of chemicals and machine I found in a scrapyard :-) )