It's been working great so far, using NXLoader (looks like I need to update to v0.3 that just came out) the payload.bin file on my Galaxy S8+ with a USB C to USB C cable. I don't even have to turn my phone on for it to inject the payload and boot SX OS. Tried Auto RCM to test and worked as expected, but going to use the Jig for the time being however I may consider using Auto RCM in the future. I actually like booting from my phone better than I think I would from the Dongle, phone is always with me and could change payloads on the go without having to reprogram the SX Pro (yes I know SX OS can boot homebrew, but I've seen lots of issues with that). Tried Mario Kart 8 .xci drag and drop, could not be easier.
Overall I'm glad I went the SX OS route vs the SX Pro as I would probably wind up just using my phone anyway with the Jig, and USB C cable that I had already had which I can fit in my game case, I know the SX Pro would not fit. Pretty much just different way to boot into the CFW, got access to it earlier than most Pro buyers. Bought my code from ModChipsDirect though there was a hiccup as I was not aware they use an overseas CC processor so I had to call my bank to let it go through. They did try to process my order in under 3 hours last night, today after clearing it with the bank they delivered my code in about 5 hours after contacting them to run my card again. Been a long time coming, but I'm very happy with it. Never even planed on buying a Switch till the exploit came out and realized how powerful this system could be with an unpatchable bug that gives us complete and full access to the hardware.