the knurling wears off fast, slippery smooth after that; wheels never stay-on straight b'cos u will never be able to tighten it properly due to the plastic pegs' compression; pegs will snap off either after bad crash or hard jump on it (usually after a couple of months). some plastic pegs break cleanly, leaving u with a tube n plastic washer, some crack off n leave sharp shards.
u decide if a couple of grams is worth the PITA