Bought this pannier for my wife for everyday use instead of our long distance cycling panniers. She finds it quite handy with its top and side pockets. She moved the rain cover from the top pocket to the net which is inside the main compartment. That enables her to use the top compartment for other things. So far so good.
However, the flaw with this pannier is the bottom rack fitting, which is there to stop the pannier flapping out from the rack. Most panniers have a couple of spring clips to hang from the horizontal bar of the rack, and then a slider or twist or similar at the bottom to fit behind one of the vertical rack supports. This pannier however has a third clip, identical to the clips at the top and which can be slid forward and back some 10cm. The problem is that it is very difficult to open the clip sufficiently to fit over the rack support because you have so little room for manoeuvre between the pannier and the rack supports. With a lot of pressing and shoving we did eventually get it to clip on, but it would be almost impossible with a full and heavy pannier. On another of our racks it wouldn't fit at all.
For the moment we have simply removed the spring from the bottom clip so that it stays permanently open, and it sort of works, but it's not ideal. A pity because had it had a more normal fitting it would have been an ideal cheap pannier.