Drove by Uncle Darrow's on Venice Blvd. (just west of La Brea) and noticed it was gone and replaced by a place calling itself Toye's Cajun-Creole Po' Boys. I doubt that it's the same ownership - the roof on the east facing side advertised "Beef" (Darrow's only served fish, seafood and fowl - no pork or beef). I think the Marina Del Rey location is still doing okay, but when I was there three weeks ago I noticed that they raised their prices, so it's not as good of a value anymore. Looks like they're doing what they can to hang on . . .
Didn't try Toye's yet (I was on my way to Dino's for chicken), but maybe I'll try it soon and post a report.