Aren't they still miniatures? (~1:40 scale)
*sigh*
OK. First, you'd have to join CamoSpecs. Which is both relatively hard to do, AND is a terrible idea. Aside from "you're assigned to do mandatory painting projects, you have to buy your own minis from IWM, and CGL will never reimburse you", you have to pass their initial grading tests and then deal with Ray. Neither of which is something that anyone sane wants to get into.
Second, CamoSpecs explicitly only allows IWM minis to be shown on their site. Which these are not. In fact, technically speaking, you're breaking the law by using the images owned by PGI, since they have not given specific license for those images to be exported and printed. Which means CamoSpecs CERTAINLY isn't going to let you publish them there, given how gun-shy the entire community is about IP law.
Third. they aren't designs intended for the tabletop game, which precludes them from CamoSpecs by default, since that's what the site is designed for.
Fourth, this question was already asked and they said, "no, don't ask again."
Fifth, Ray, the guy who personally runs CamoSpecs, has said on multiple occasions that he hates the idea of 3d-printed minis because they pull business away from real mini producers, and so even if all of the above issues didn't exist, he personally wouldn't let them be posted as long as he's the one who controls what goes on the site.