I went the redeeming on SEN method thinking it was going to automatically download. Boy, was I wrong. I read that you have to still manually go to the PSN store -> Demo -> download, but it seems to be greyed out. I don't know if I fucked myself over or not. Anyone else try this method and succeeded in downloading the client?
Edit: Also, for those who went the EU PSN Store route, but live in the US, did that work?
Edit2: The Download button is now a Purchased button. Now waiting for to confirm download...
Edit3: Started downloading automatically. Finally!!!