I had to change my lace in the middle of a ride and I carry the lace and buckle part in my bag, took less than 10 minutes, love it!!
This was a replacement for cables that had to be cut (long story). My biggest concern had been installation. There were several videos on-line that showed how to do it and it turned out to not be an issue. Now they work just as the old set, no better, no worse, which is fine.