I bought these bags last minute for a trip. I was looking for something inexpensive to tide me over until I'm ready to pop for the genuine BMW bags for my F800 ST, and these were in stock. I love the fact that this web site could tell me they were in stock, when they would ship, and predict when they would arrive, all before I got out my credit card!
I'm probably going to use these a lot longer than I originally planned. These are well thought out, designed, and built.
They attach securely, with the main web under the seat, plus fore and aft tiedowns with plastic snaps. I probably spent about 15 minutes putting the anchors on and adjusting them, but less than a minute taking them off at the motel (unsnapping the bags and leaving the tie downs in place), and less than 5 minutes putting them back on in the morning. A couple minutes to remove the straps when I got home, and I'm back to "stock".
I didn't get to use the rain covers, but they are built right in, and fit well. So no worries about losing them or leaving them at home when I need them.
So far I don't have any complaints.