Mishnah Berurah — משנה ברורה

It is permitted to go out - Even at night (ie. Friday night), which is not the time [for the fulfillment of the mitzvah] of ציצית, because it is [considered] a beautification of the garment. And even [regarding] a טלית made from other materials, even according to those rabbinic authorities above in siman 9 - se'if 1, [who hold] that the obligation [of those other materials] is only on a rabbinic level, nevertheless [they agree] that it is a beautification of the garment since in any case they (ie. those טליתות) are obligated [in ציצית] based on a certainty (ie. we can say with certainty that they are obligated in ציצית, even if it's only on a rabbinic level). And it's not similar to a garment that is [exactly] half open and half closed (ie. a tallit katan where the sides under the arms were stitched up so that it was exactly half-open and half-closed (if measured from the top, by the shoulder, to the bottom)), which the Shulchan Aruch ruled above in siman 10 - se'if 7, that one may not go out with it on Shabbos, for there the obligation [to affix ציצית on it] is only because of a doubt (ie. it's doubtful whether that half-stitched up garment requires ציצית or not). [Pri Megadim and Orchot Hachaim, who disagree with the Shev Yaakov. Afterwards I found that also the Olat Tamid wrote like them].