The bear is indeed antiquated, still bloody impressive performance from a prop though. "Hear and Avoid" is probably more useful than "See and Avoid" with them I'm told.
The Blackjacks, when the Russians save up enough money to fly them, are a different proposition altogether.
I've had the Bears pop up in my airspace before. Didn't cause too much hassle, just had to give some traffic information. I believe a couple of Typhoons went up to say hello that time too, off the West Coast of Ireland.