Mounting bookshelfs flush with ceiling - can you?


Instead of the standard true ceiling speakers for the surround channels in a 5.1 system, has anyone ever tried just mounting a bookshelf speaker flush (totally recessed) with the ceiling via attic? One can always buy a white speaker grill to cover the area in the ceiling. I imagine that a bookshelf in the $250 range (used) will sound better than a true ceiling mount speaker in that range.

Ideas? or am I way off on this concept?
goldenears7
bad idea ... try a pair of the Martin Logan ceiling speakers on closeout from audio Advisor ... send em back if you do not like them ... of course you will have some holes to patch though :)
If you have a suspended ceiling  or would be easy.In my old basement man cave I just put the close to the ceiling...it was great ,no problems. 
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Tall stands, save yourself cutting through plaster. If you can't buy them the right size, find yourself a welder to cut up and weld a pipe stand with  a tripod base, maybe?