Right-on gingerkale. i have seen plenty of pictures of bochurim from all the yeshivos of Europe: telz, kelm, kamenitz, slobodka, novordhok, etc. ALL the bochurim were clean shaven, and they used a chemical that burned the hear all the way, including the root, so there is no way a lift anc cut shaver that just cuts the hair, and not the root is worse. it is imposible svorah to say such a thing. yes, the chofetz chaim and the chozon ish may have assured it, but , and i dont mean this in a chutpadihk way, they were only 2. many, many, many rabbonim, of which included many gedolim, did allow such shavers, including rav moshe! i do find it funny how some feinsteins, and i am not sure if it is the roshei yeshiva or other grandchildren, who claim rav moshe would never hold of the shavers (lift and cut) today. unless someone can speak to the dead [hey, you never know :-)], that can in no way hold any halachic authority. le’maaseh, teh jewish thing to do is not ask stupid sheilos on random message boards, and get answers from no faced answerers. teh thing is to get up , find a rov who has smicha, (not a rosh yeshiva, since not all actually have smicha, unless of course yours does) and ask him. and also ask him why yes or no.
my rov told me that checking lift and cut gets looked at as any other rotary blade, check against arm hair, and if it is a razor, then its no good, if its not, then kosher. the fact that lift and cut is a scissor that is too good, made no sense to him, and he is the talmid muvhik of one of the gedolim of yesteryear. (and has smicha from rav shlomo zalmen aurbach)