Well my brother's wrist support has a size L, it couldn't hold my wrist firm enough and tended to hurt a little while moving my arm around. Paid a visit to a nearby pharmacy and bought one with a size M. I was skeptic about getting a smaller size as it might be too tight and wouldn't be comfortable. Turned out it's a perfect fit!
Yes it is tight but that's exactly what it's designed for - to compress your wound and to ease the swelling. I also iced it Sunday night before wearing the new wrist support.
I have been wearing it for a day now and I must say it really works. I don't feel much pain unless I move my palm at some really odd angle or got some small knocks. I can operate my PC fine. Typing is a little slower but manageable. Using the pen tablet isn't an issue at all and it only makes me appreciate my Bamboo Fun even more! Bathing is somewhat challenging but once you get the hang of it, it's just another day in life. I only find it hard to reach for my left shoulder and it's almost impossible to clean my left arm with, just, a left arm.
Wringing out a wet towel is another challenging feat. It takes some practicing, but still you can't expect a properly wrung out towel with just one hand. I can live with that.
I believe my wrist will get better later in the week. On the other hand (no pun intended), you'll be surprised how many things you can do with just one, non-dominant hand.