Tonight I've been listening to one of the CPO releases in the Felix Weingartner series - in this instance the Second Symphony and Das Gefilde der Seligen. Very lovely, lush, late-Romantic music. Mahlerian, but more accessible. I'm impressed - a cut above most of what one hears from composer-conductors.
Weingartner-like Furtwangler-was convinced that he was a composer who conducted :)
Well, based on my admittedly limited experience of both, I'd say Weingartner succeeded on that count where Furtwangler failed. ;D