I tried Chomp SMS and it said something about disabling notifications in Android. I haven't got to test this much but it may work for Handscent also. I prefer Handscent so far over Chomp. The layout is a little nicer.
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Sig. Upd. 11/04/2013 --SGS4, MF3 ROM, ZeroLemon Extended Battery--
Previous Phones: Samsung Galaxy Note II w/ CleanROM ACE, SGS 3, Galaxy Note, Samsung SGSII, Motorola Atrix, Samsung Captivate- Perception ROM, ATT Tilt2- Energy ROM, GTX/CHT, July 21, 23121, HTC Fuze, ATT Tilt, HTC 8125