Precisely.
But I don't want them wearing the PAs YET.
I haven't figured out for sure if they can or cannot be damaged while being worn by settlers. Thinking of sacrificing one of my spare T-45s to figure that out. Fix it up, direct a settler into it, hang out for inevitable random NPC attack, direct settler OUT OF power armor, inspect components for damage. Simple experiment. Finch Farm tends to get attacked every time I drop in (even got attacked by Deacon, believe it or not), so maybe I'll try it out there. I WOULD just put Piper in one and see what shakes loose, but I want to be ABSOLUTELY CERTAIN how it works with SETTLERS, not COMPANIONS, in case there's any difference (which I DOUBT, but nonetheless I want to control for that possibility).
Interesting sidebar: I stowed a bunch of PAs on the roof of the Red Rocket, then dropped the fast travel target up there, then scrapped the stairs leading up to the roof, so one can supposedly only reach the roof via fast travel. THEN I invited settlers. WOULD YOU F***ING KNOW, a couple of them got up on the roof and mounted my power armors. I only knew from downstairs, because it was night and I saw the headlamp of my X-01 Mk VI shining (glitch) through the ceiling of the building after a quick skirmish with some supermutants. I go outside by the chem station, look up, and there's my X-01 looking back at me with its big, bright, red eyes. Put a stop to THAT crap right away.