I disagree, the reveal of the Colony-Batwoman-Suit suggests to me he'd been planning it for a time. In either case, I can't view him the same way when he shows-up in the comics, for as long as the Colony story-line remains cannon. He's lied to Kate about numerous important things now, and that seems likely the direction they are also going in for the television series, though I'll have to wait until I'm able to watch the series to find out.
Jacob was also the one who suggested she become Batwoman, otherwise she only really chose to become a vigilante on her own, and the whole Colony saga basically said Jacob wanted an 'improved' version of the Bat, or well an army of them.