The first thing of note is how slick this SX device is, as well as sturdy. Care and attention has definitely been put into the crafting of this piece of kit, from the dongle attachment that slides easily into the USB-C port on the underneath of the Nintendo Switch, to even the small contraption that goes down the metal runner insert where the right Joy-Con normally resides. It is quite straightforward to get everything set up, as well, with a few basic files added to the Switch's SD card, and ensuring the latest SX firmware is loaded.
Also, as this takes advantage of a hardware-based exploit, rather than software loophole, it means all current Switch units on the market can make use of the SX, without fear of an update blocking it. Obviously, there are ways and means for Nintendo to ban online accounts if people start delving into non-legal waters, though, so anyone tempted in that direction should proceed with caution, or avoid completely.
Something that should be clarified is that Team Xecuter is providing its SX OS for free, thus meaning those wanting to try out homebrew and other applications can do so without any extra charge. The company is only charging for the grey area of allowing a special unlock to back-up games from existing, purchased game cards. Minor point, but worth mentioning for those wondering why there are different licences, with an SX PRO, on the company's website.