Cool, as you may guess from the underwhelming response here, it is not a commonly used base.
I know you need to use a certain weight of PEG as the most common weight is a fiber substitute and that TW sells, or at least use to sell, it. (For some reason 400 and 800 pop into my head, but I really cannot remember the correct weight.)
I've read posts here where someone said they were going to use it, but don't remember hearing back from those posters. I've also read where folks have picked up PEG in powder form by some mistake and they all returned it to the store after asking questions here. (Unless they needed it for its actual use...)