The trailer works well and is easy to setup and take down (I did have to read the instructions the first time I set it up, but they were easy to follow and I don't need them anymore). My kids like to ride in it. We have never used it as a stroller, but the bike attachment bar folds underneath so it should be fine.
The only part of the trailer that seems a bit odd is the spring that transitions between the bar and the bike. It isn't angled correctly so when it is on the bike it is always flexed. It doesn't appear to impact performance at all, but I am not sure if it will wear out faster. It appears to be a strong spring, so I don't think it will be an issue.
Anything the product lacks, the company more than makes up for in support. They are one of the best companies I have ever had the pleasure to work with. The initial shipment was damaged. They provided a replacement very quickly, without issue, and without cost to me.
Also, I have a bike with disk brakes and the standard attachment doesn't fit. They tried to provide another solution but couldn't find a perfect option, so they provided a second attachment for the bike so I could experiment with it and make it work without ruining the original one. If I can make it work, I will be able to easily switch the trailer between my bike and my wife's.
I would highly recommend doing business with them any day...and the trailer is good too.