The thing you're referring to is the
ClipDraw, but I'm not sure if the universal one would fit the LC9 or not. The
VersaCarry is pretty similar and definitely fits the LC9.
I would strongly advise against such a "holster". These type of carry solutions provide little to no trigger guard coverage, and you stand a much greater chance of a negligent discharge using something like the Clipdraw. Your gun will also get dirtier and will probably be less comfortable to carry, as opposed to using a normal IWB holster.