Bondsmiths can manipulate connection specifically, I don't think a bondsmith would be able to steal innate traits like strength or mental fortitude the way someone could with hemalurgy.
I believe allomancy is from connection to Preservation, so you could probably steal it, yes, but I don't think you could steal innate/self-dependant investiture like Feruchemy or [Warbreaker] Biochromatic Breaths, since those aren't tied to/dependant on connection, afaik.
But I'm no professional arcanist, so take that with a pinch of copper.