Here is my brief feedback after using eXch the first time. I used it via TOR with the browser security settings set at the highest level.

After the coin I wanted had enough in the reserves, I sent my BTC. The system picked it up quickly. After the first blockchain confirmation, eXch already sent my coins. Quick and simple.
Regarding the fees:
When you consider how expensive the Ethereum network is to work with, you understand that you will pay more than the 0.5% in fees advertised on the site. Of course, this isn't a fault of eXch, as they can't be blamed or praised for the state of any blockchain network. I ended up paying closer to 1.4% when I count the Ether fees.

Overall, it was a good experience, but one that could have been better if I could have used Tron for my USDT instead of the Ethereum network. I'd much rather pay $2 in fees than $20. 

Keep up the good work eXch!