Hi Dev,
I have downloaded and installed the Espers wallet and this is my experience.
The installed files does not really belong in data/Roaming, only the user specific data (blockchain, wallet.dat etc) should be there.
(See
http://www.rapidee.com/en/environment-variables for suitable ENV-vars)
The launcher does not work for me (Windows 7 Enterprise) and I had to dig around to find the actual Qt-wallet, (yea, I found them in data/roaming).
I also tried the sgminer but it failed, that is probably due to dependencies for different graphics cards. In my case Intel HD4000 just as a FYI

The cpuminer from suprnova works like a charm, and I'm currently bashing out between 25-45KH/s (Yay!)
I just wanted to share my experience , so dont take this as criticism

/Bejjan