I've been on an extended getaway trying to escape Wisconsin winters, so I brought my Steam Deck. I installed a 1TB SSD and created a 300GB Windows partition. At the end of the work day I can unplug my corporate laptop and plug in my Steam Deck. I'll do some .NET programming for a bit on a side project, and then jump on Valheim with friends. At the end of the day when I just want to sit on the couch or lay in bed I can undock and reboot into SteamOS.
It's not a perfect experience. Some of the Windows drivers could use some work. I would rather be running Visual Studio on my desktop at home. Performance in games like Valheim is maybe around 40FPS average... but I would seriously ask the question what other $400 device with a $150 SSD upgrade could product the same results.