Welp, im no expert, but being that this had been done before, id say its ok. I guess it depends on the availiblity of a better copy. If nothing better is availiable, then i say go for it.
Many of the shows from 1993-1994 tour were origianlly done on cassette tapes. Most of the conversions were done from the origitnal tapes or a second generation copy. Thats all thats out there, so go for it.