There is really no reason why not, though it was assumed that PPI was the target use of tce-uninstall as well as tce-uninstall's miniscule size. But since is supports all modes it can be a tcz too that way deps are pulled as tcz's. But if you already have the deps installed as tcz's then they wont be installed again as tce's.
This also makes me think that the same principle can apply to the getFlash extension that way all depends are installed as tcz's and the resulting extension is a tcz. Each instance of the flash lib accounts for almost 10mb of RAM, and with all 4 major browsers loaded that is 40mb of RAM taken by flash libs alone.