Traynor - Bias feed on Suppressor Grid?

I searched this topic in this group a number of times, after seeing a
brief article on it over at Tone Lizard (http://tone-lizard.com/
Marshall_Myths.htm down at the bottom). Basically (for those who
don't know or remember), the bias feed is tied to pin 1 of the EL34,
instead of simply tying it to ground (via pin 8) as normal. This is
supposed to make the tube more efficient or linear, or something.

All the posts regarding this Suppressor Grid application seem to
debate whether or not it actually does what it's "supposed" to do
(increase efficiency, etc). I'm not particularly interested in what
this application does or doesn't do in the technical sense. As far as
I've seen, nobody's come out and said "NO, don't do this!!", so I'm
fairly certain it won't do any damage if I were to try it out. All
that interestes me is how it SOUNDS.

Anybody have experience with it, or tried it on their own EL34 amps?
Does it make the amp cleaner/dirtier? Brighter/darker? Louder? Any
difference at all?
.