It is totally possible, anything that has an input and an output can have a sample sound run thru it for capture purposes.
It will not capture all the possible settings, which is why people end with huge folders of IRs all in a range - BUT if you have a dialed in favorite sound or two, that could capture a lot of it. If you love the Two notes sounds and own their stuff, it's worth a try to lug less to gigs.
I'd be shocked if someone else hadn't done it. It's a shady area, ethically to sell any TN captures, but is or isn't legal depending on what country you live in, so I doubt anyone is reselling it, but someone is probably giving some of it away on forums.
I love enough of the stock Fractal IRs that its not a curiosity for me. A good 4x12 GB cab is all I need and a few minutes to get it dialed in.