Hi Coolhand...
Oh yeah, you'll definitely love the Streamlined Hudsons... Yes, I do operate both the PS3 engines with the legacy, and I also have some 3rd Rail engines with the good old classic TMCC still in them.. So I really enjoy running legacy with the PS3 engines - runs pretty smooth actually. You should definitely check out some cool PS3 engines that you like, both systems work great together, and I really enjoy running both types of engines.
David