like always having a rope
I paddle with plenty of folks who don't have a rope attached to them, but I can't imagine going that way. With the delayed snow I've had some late season low water little white runs that have seen multiple pins each time. 3 or 4 times I've had to jump out of my boat as fast as possible to grab a bud's stern or bow (one particularly ugly one at nasal douche without enough water to get right) where there's no way I'd first take the time to grab a bag. Twice it was nice to have the bag without having to let go of the boat.
I've had a bag on my jacket since lotus started making them (95-96?). They're much smaller than a salamander (have that too, don't use much) so I never notice it, but have made quick draws many times. I carry something longer also, but I treat the little bag hanging on the back of my jacket as another piece that's always there with the knife, whistle, belt and tow.
My ancient Lotus rescue'll have to be retired soon and the integrated Astral bag pocket seems perfect.