SW also excellent, to be honest had bits from both and perfectly happy with quality etc. get whatever suits your need best.
I've had an issue with Givi Tank bags. Replaced my smaller one (602 I think) due to the zipper failing at the back. The new one has done the same but I got out a needle and thread whilst on a recent tour and carefully stitched the errant coil back onto the fabric. Not sure how long it'll last though. Shame as otherwise a great small tank bag for bits and pieces whilst on tour or for day rides in the UK.
I've had the same thing happen to my Ducati branded Givi tank bag, apparently it's a well know issue, of course it always after any warranty has expired .
Yes, if my repair lasts as long I'll be pleased with that. You'd think they'd do something about it though as I'll be looking elsewhere next time despite the bag being otherwise perfect for the job. The repair took about 20 mins so will be trying the same next time, with better/stronger cotton than came in the hotel sewing kit, as the bag is otherwise in good condition.