You can almost certainly just use the LGPL/free version with whatever you are doing on the desktop. So I would say it's still an option.
You would mostly need the commercial version only for mobile deployment due to LGPL having issues with static linking. Support for natively compiled Qt Quick is also a bonus.
You would mostly need the commercial version only for mobile deployment due to LGPL having issues with static linking. Support for natively compiled Qt Quick is also a bonus.