I ALMOST bought one that fits that bill today... kind of.
I've got a GP100 and like the SP101, though I still consider the SP too heavy for a true snub-gun. Remember the Speed/Service Six model that was the predated the GP/SP? I loved em... especially the Speed Six in 2-3/4 and the more rare 3" Postal Service Speed Six. Honestly I consider them a better gun than and equivalent size 3" GP or SP.
Cut to the chase, 3 hours ago Bradis has a blued (though worn) Speed Six with a 2-3/4" barrel and a worn sheath: Price? $249. Suhweet! If it had been stainless, it would be home with me now. It almost came home anyway but was nudged out by a great deal on a PLR-22.