The side effects are that it makes your switch work properly with the latest Atmosphere custom rom. Exactly what downsides are you referring to? If you are running a hacked switch then these sigpatches are necessary.
I think the latest Hekate is 5.3.3.
Google Hekate 5.3.3 and download the zip file
Extract this zip file and copy content to the SD card, this will update the bootloader on you SD card
Use the injector to inject payload Hekate 5.3.3
You need to go to the folder on the SD card where you saved the downloaded firmware. Google switch firmware 10.2.0 to find a link to download the firmware manually. There a numerous Youtube videos on how to use Daybreak
Thank you for this, just bought a new switch and was looking for the latest Sigpatches. Took some time to set the switch up with Atmosphere but well worth the effort.