Yeah, almost all of the touring I've done in the pat 5 years is credit card style. Total weight of my kit has never exceeded 17 lbs including bags, not including bike and rider. The guy who averaged a 200km brevet a day across the southern US ran 236 pounds fully loaded including rider, one pair of RTP tires for the entire ride. His gear totaled around 45 lbs. Credit card touring on Compass tires I'm closer to 265 lbs including rider. He was doing loaded touring, I wasn't. Loaded touring doesn't mean anything to the tires, total weight does.

Like most things, there's a tradeoff. I wouldn't consider doing credit card touring without a wide, light, supple tire. On the small end I've used 700c x 33.333 Jack Browns (essentially the same as a Compass tire, but in between sizes they offer), up to 42's.