I know, it is surprising that no one had the imagination to include these features years ago; makes this one more appealing. It's just the durability issue and whether it matters if it lasts more than a couple of years to consider against the advantages.
Some other options: none have the combo of the Gold's piece but are durable. Unless space is an issue i'd go with two of these instead, though the Gold's piece is intriguing other than the durability issue:
http://powertecfitness.com/gallery/p...ness_l_vts.htm http://powertecfitness.com/gallery/p...ness_p_cdv.htm http://powertecfitness.com/gallery/p...ess_qf-cda.htm 
