I like having an acrylic blade on one side and a hard rubber blade on the other. Hard rubber - somewhere in the 60A-70A range, so about as hard as tire rubber and firmer than wiper blades.
For obstinate clingy snow that doesn't actually need snap-cracking, the rubber is more effective than a brush - brushes tend to skip up over the top and only take the top loose bit off. Obviously, the rubber is more paint safe than the acrylic side, except you have to wipe it down with a cleaner every so often to get the grit off the blade.
The comparison standard in this category is the Quirky Thor design:
AMAZON LINK
I'm pretty sure I posted about it in at least one other thread.
On the up side, the handle is REALLY sturdy. Also, the rounded side with rubber on it is both a grip and a scraper when held flat. When used as a grip it lets you really bear down on the ice scraper side, better than just about any single-sided hard plastic scraper. That might be a good thing for arthritic wrists, or it might put too much force on them, I don't know. I have yet to find anything better for getting freezing rain crud off the side windows.
Disadvantages one might not immediately notice: Not so great on highly curved surfaces with the handle extended.