Not sure if you're asking whether we've seen these places since Keith or just seen them in general. I haven't seen either since Keith -- Mata Chica did get significant damage, I'm told, but is saying it will reopen in mid-December, while Blanacaneaux was totally unaffected by Keith.
However, I've seen both on several occasions and have stayed twice at Blanacaneaux.
Blancaneaux is really a terrific place, especially the villas, which are in my opinion among the two or three most deluxe accommodation options in Belize. Mata Chica is lovely, too, though the design themes are perhaps a little over the top for my pedestrian tastes. The only addition I'd like to see at Mata Chica is a swimming pool.
Francis Ford Coppola recently bought Turtle Inn in Placencia and is renaming it Blancaneaux's Turtle Inn. I guess for that reason Blancaneaux no longer will do joint packages with Mata Chica.
Belize First Guide to Mainland Belize http://www.turq.com/belizefirst/
Fodor's Belize & Guatemala Guide