i use that little cord on everthing, SD's, ego/nado, iphone, ipod, sony reader, i got a couple of usb 4gig memsticks and one package had 4 extras in it, yeah for me!. the ones i have, have a metal bit instead of plastic, and smaller, but that cord is strong! i was afraid for awhile, on a 400$ e-book (darn walmart 189$), it took me some time to accept it. now its the only thing i use on the pv's i have.
and in my pocket, i put a little spring clip so i dont have to reach to the bottom of the pocket...yes, i am lazy. hehehe
on the ego/nado i knotted it to have loop the size of cone threads and have assurence of cone body holding the cord in place.