Yeah, i use fatboys in my loop as well. The barbs they include are standard "hi-flow" barbs, which are basically taking a standard g1/4 barb from the hardware store, chrome plating it, and adding an oring. Even for the price of the swiftech rads being "cheap", even cheaper are the XSPC radiators RS line, which offer much better flow rate than the MCRXXX line and also have higher heat dissipation capabilities than the swiftech radiators. And yeah, the swiftech blocks are great for the price(especially something like the XT) but some are pretty mediocre(eg- apogee drive which is basically a ddc with a copper plate attached as a "waterblock".
Quite easily i could sum it up by saying swiftechs are ok, but making a thread and asking for help with a parts list is the best way to do it if you are new to water.
Well, some actually are non conductive and will stay non conductive(feser one i think it is, its based on a really thin oil) because just like oil submersion cooling it wont conduct, however many of the coolants such as the one in that video are just water with anticorrosive additives and dye added. I wish i still knew what one they were using but since that was posted its now a different blog.