Rob,
It works great with warm tone papers..MGWT, but less change with MGVI - not worked with the others (though it does a very nice job with Agfa MC111).

Yes!!! It does smell bad, I take it outside to tone with.

I have used it with KRST and like the results.

I would suggest picking up Tim Rudman's Toning book to get more information..it is a Great Book.

BTW - I really do like this toner.