So after some reading around today, I discovered that it is possible to upgrade clothing to incorporate ballistic weave. As somebody who finds power armor to be a bit bulky and unwieldy and not at all flattering to my figure, I love the idea of being able to upgrade clothing for better protection.
According to this question by k0pernikus, Fallout 4 does have a point of no return, past which certain faction quests will be unavailable. Additionally, according to an answer to another question, this ballistic weave upgrade is only available via a quest from the Railroad faction quest line. Unfortunately, I really couldn't care less about Synths and don't want to join the Railroad for the end game.
So my question is this: if I go down the Railroad quest route far enough to obtain the ballistic weave mod, will I pass a point of no return?