Yes, I have a buddy who had knee surgery and his movement was just too compromised to play singles effectively, but can play half court like this great. It's actually a great way to play if you want to hit a lot of balls. I've also changed it up where the returner still gets the double alleys on returns (this changes the game a bit where the server may then decide to start off more in a doubles type serve position, but obviously doesn't have to).
My only frustration with this style of play is that coming to the net and volleying isn't as intuitive as when you play normally because you are forced to volley back to the player versus the open court. But I quickly learned that this just makes you hit better approach shots and makes you focus on hitting solid deep volleys (or drop volleys), so it can still be beneficial. Overheads are no longer easy put aways either, so you really learn more pinpoint precision on those. My buddy will also run around backhands since the court is so much smaller, but that's his choice. I try not to run around balls to be sure I'm getting to work on both wings appropriately.
