there would be a benefit, a hand lube job will be more consistent as you are intentional when it comes to every area of a switch, compared to gaterons which is most likely automated which would most likely create hot spots where there is way to much of not enough lube.
I would personally do it, not necessarily because of the lube job, but that is definitely a factor, but mostly to replace the stock springs with consistent ones, and if I'm doing that I will just take the time to redo everything, but that's just me.