The only problem Ive found with the Gibson bridge is that if you pop a string during a gig and forget to grab the saddle, you'll lose it. I learnt this the hard way back when Gibson had NO customer service or Epiphone existed. Had to have one made by my local friendly and expensive engineering firm.
The Gibson bridge does the job really but they are rather odd, the Supertone doesn't change the sound to my ears and does look out of place. If your into having a Thunderbird, the bridge isn't your problem, its making sure you keep holding the neck up whilst playing. Ive had 3 over the years and loved them all. Too awkward at my age, theres too many fab basses that don't give you grief to make a Tbird viable for me anymore.
They sound and look fantastic though