First impressions are very good. I have used it twice so far to haul kit across the UK via the train network and it's very happy to do so with ease.
It's very well constructed with a great set of wheels. The handle locks out in three positions, down, half extended and fully extended. There are two grab handles at either end along with two external compression straps both sides that you use to compress the bag when not full. The outer skin is tough and waterproof. It could have done with extra material at the wheel end to help with wear and tear when standing up though and this is my only slight concern with the bag. The underside has two strong rails to protect the contents and protect when bumping up curbs.
On opening the bag via the large D shaped top flap (great for packing) you are confronted with a large single area for kit. It also has a very handy built in dry bag for packing of wet kit/washing. Also underneath the D shaped top is a large mesh compartment that swallows up my 17" laptop with ease. Two internal compression straps help hold your kit securely. Time will tell, but I look forward to many years of easily hauling gear with this bag and consider it a great purchase.