I can't say anything about yours, but I've owned four R3Ts and the fastening of the bags to their frames has been one of the nice features. In my experience, if they're lined up right, they are easy and reliable, both going on and coming off.
It really makes it easy to get the bags out of the way for final drive, tire, and other service.
It also makes for easy R&R of the bags if the bike goes to the dealer. I don't like to subject the bags to the perils of a busy shop.
I've had other bikes with hard bags that were bolted on, and it was more aggravating to deal with a bolt-on system.