No, don't buy the nasty apple sh!t. Furthermore you never know if Apple doesn't have messed with it and it works differently. Standards are to be broken (at least for enterprises like Apple or MS). Besides I personally don't want this Thunderbolt stuff. We finally have halfway settled with USB and that seems to be fairly ok. I hate buying everything again.
I still have so many ISA-Cards here and a plethora of PCI cards. But there are no ISA slots anymore and normal PCI becomes rare. So I shall buy the same functionality again as PCIe for twice the money. Especially ridiculous is then using a serial interface on PCIe which will surely overload the bandwidth capacity of PCIe...
So USB is widespead, it works everywhere, it is quite compatible with itself and by now seems to be relatively troublefree. USB3 offers good rates for mass media, for nearly everything else USB2 or even USB1 (mouse, keyboard) seems to be enough. So why Thunderbolt? (Of course it is good when it works in the kernel once it is there but generally spoken...)
Stop TCPA, stupid software patents and corrupt politicians!