I don't know of any local store with a really good holster selection, there are just too many combinations to stock.
I have an alien gear I carry my G26 in, and I like it a lot. I believe it uses the same base as the LCP would, but not the same one as a full size glock (there is a section of the base that extends down further for full size pistols) so that the end of the barrel and slide have something to separate then from you. I believe the various shells would work on both bases, but wouldn't be "correct".
I also have an LCP II that I carry in the factory pocket holster quite often. I don't have an alien gear shell for it, but it seems to me that putting it in the alien gear would defeat the purpose of carrying the LCP over the G26 (it's size). The holster will triple the footprint of the gun.