Well I've been using my Chase Harper Tank and Tail Bags for a little over 3 months now and I've been really impressed with them.
The Manta X2 tank bag, while extremely small, seems to fit the Strom tank perfectly. I can easily fit the necessities for a quick trip in the bag but have very little room to spare. I can fit my cell phone, sunglasses, hat, wallet, bungee net, bottle of water and a granola bar in the bag but have to pack it carefully. What I do like about the bag is that the main compartment is reinforced with what appears to be a PVC lining and the zippers are waterproof making the bag extremely water resistant. Even though I do really like the bag, I'm thinking about pulling the trigger on a larger bag for longer trips.
I feel that the Deluxe Hideaway Tail Bag is a great addition to the Wee. Unexpanded, it can easily fit my helmet or all of my gear with a little room to spare for books, etc. In fact, I've never had to expand the bag which would almost double its capacity. It easily hooks on to either the passenger seat or the luggage rack although I think that the bungee hooks are little oversized. When the bag is not in use, it zips into the front accessory pouch and can fit in the tray under the seat. This bag is made from a lighter weight Cordura than the tank bag and is not waterproof. However, it is necessary for the fabric to be lighter so that it can fold up into the front pocket. I keep a garbage bag inside to help protect the contents from the rain. The trash bag liner doesn't impede the bag from folding into the pocket.
Overall, I'm very happy with the Chase Harper luggage. I'm so happy with the quality and cost of the brand that I'm looking at buying a larger Chase Harper tank bag for longer trips. I really like the SR3 Tank Bag but I'm not sure how well it will fit on the Strom.
I'm surprised that there aren't more Troopers using Chase Harper gear. They are great bags at great prices and have certainly earned my endorsement.