Yeah I do have a laptop for work only, however the gaming desktop is always that much more powerful and some things are tempting to do there (not to mention better display). Windows now has embedded Linux, so I can see maybe a setup that uses the same files from Windows by launching some Linux environment when I need to work. I just hope that because of this Linux/Windows integration, some of the reverse can happen and Linux can get DirectX support for current version.

I have little time to play games these days, but I do that. Have two machines, both always on, one of them a windows one for games, the other runs linux for everything else. I use a usb switch to, on-the-fly, change all the relevant devices (mouse, keyboard, headphone dac/amp, etc) and adjust the monitor input to use one or the other. It works extremely well, and takes ~1-2 seconds to switch.

The barriers to using both is really only a question of disk space. Dual booting isn't difficult (just install Windows first).

Dual booting isn't "difficult", but is frought with a lot of little issues that probably should be understood. Ex: UEFI Boot vs Legacy BIOS. Bootloaders, Grub vs Windows bootloader, etc. etc.

I prefer buying a 2nd flash drive and dual-booting across different drives entirely, so that Windows / Linux don't even share the same bootloader. Its not like $200 for another 1TB Flash drive is expensive, and apparently I need the space anyway.