It's useable, but of course it won't be as useful as it would be if it had ideals IVs (everything perfect except with 0 in the offensive stat it doesn't use, if any). You never know; although the chance if small, its IVs could still all be in the late 20s, which would basically make it just as good as one with the ideal set of IVs.
Basically, after EVs and natures are perfected, IVs are what it boils down to. This is also assuming it evolves into Charizard, because Charmander online is useless :P