I thought some HAs do have bluetooth capabilities by now- either built in or via some sort of boot.
I only have T-Coils.  I have a love hate relationship with it.  The more technology we have the more buzzing static I get when I switch to T-Coils.  You can get that from TVs, computer monitors, Fluorescent lighting (yes- too many years on the cubical farms...), even the older phones (rotary phones).  Just about anywhere that has specific strength/type of electricity.  Annoying.  I now use a DAI (Direct Audio Input) cord that plugs directly into the hearing aids (with boots), set them on T-Coil and plug into whatever you need- PC, TV (tried this once), iPod/mp3 player, even some cordless phones as long as it has a 3.5 stereo jack.  Unfortunately it won't work with my 25 year old COMTEK system- I had to have a special one made with a different male plug to fit the receiver (time for a new system anyway- I lost the microphone 

 ).
Would love to see what this bluetooth bit can do.